Is the system running for domestic hot water (DHW)? The circuit breaker operates at switchover to burner stage 2 after ignition. Check the Main and Panel PCB. • Check for cross plumbing between the cold and hot water lines. Circuit breaker operates while the boiler is running. 1. Make sure the power is on, and plugged into the outlet with the correct voltage. Usually that just meant that air filter on the input air is clogged. Ensure that the system water level is appropriate. navien 210A NPE. ► Replace the dual venturi. Free appliance repair help, parts and troubleshooting advice for nonprofessionals. • Check the boiler's temperature setting. Exhaust Overheat: exhaust limit switch shuts down the unit when the flue temperature exceeds 230*F(110*0) for more than 10 seconds. The intake and outlet vent pipes run out through the poured concrete foundation and have a plastic grill on the end. 5. If you have noticed any clear signs of a breakdown in your boiler, like lengthy water heating process, some part not working or unusual noise, take steps to repair it right away. Is the filter on the heating side restricted? Turn OFF the unit, wait at least … Exhaust Overheat: exhaust limit sensor shuts down the unit when the flue temperature exceeds 230 °F for more than 10 seconds. Water is boiling inside the heat exchanger, 2. After first checking gas pressure, I started to examine the 2" PVC exhaust flue; disconnected it from the attachment point at the top of the water heater and lifted it up enough to find a dead rat inside the top of the water heater. Problem 1: Mineral Buildup . Page 44: Setting The Dip Switches 6. Gas and air differential pressure error (Pop, Beep, Explosive ignition). The water from the hot water faucet is cold or turns cold and stays cold. Check the main gas line (Is the valve open?). 1. Abnormal exhaust thermistor open or short, Abnormal Dual Venturi Limit Switch operation, Abnormal Hot water outlet thermistor open or short, Abnormal Cold water inlet thermistor open or short, Abnormal Cold water inlet2: thermistor open or short, Abnormal water adjustment valve open or short, Abnormal circulation pump ("A" models only), Abnormal Hot water inlet2: thermistor open or short, Abnormal outdoor temperature sensor open or short (appears only when the outdoor reset curve is enabled), Totally TanklessPO Box 1134, Wappingers Falls, NY 12590. Remove exhaust pipe if possible to verify vent E110 blockage. Check heat exchanger thermistor connection. termination. Is there power to the system, or is the system in stand by? Noise due to repeated opening/closing of water adjustment valve due to a defective PCB. Make sure the boiler is turned on. Page 43 Non-concentric Sidewall Venting – Air is drawn from a different 2 in or 3 in Two-pipe Vertical Venting – Intake and exhaust pipes location that is at least 12 in (300 mm) away from the exhaust do not have to terminate in the same area. Be careful that wire is not compressed when assembling the main gas valve. Space heating supply water temperature (°F), Space heating return water temperature (°F), Outdoor air temperature (°F) (from Outdoor Temperature Sensor), System supply water temperature (°F) (with optional temperature sensor), System return water temperature (°F) (with optional temperature sensor). There are problems with your heater’s fan and air pressure system. The unit was installed in 2016. Find the answer to this and other HVAC questions on JustAnswer Wait until water supplement is terminated. this is not my own pic but same thing. Clean out filters that belong to the heating side. Check the dip switches on the front panel and PCB. 1. The Navien Common Vent System provides an easy way to install the vent system for up to 8 Navien NPE water heater or NHB/NFB boiler units. Add make-up water to the system if necessary. The temperature of hot water at the tap is low while the temperature is high at the hot water outlet. If the intake vent is blocked in any way the water heater will not turn on as a safety feature. Exhaust Overheat: exhaust limit switch shuts down the unit when the flue temperature exceeds 230 °F (110 °C) for more than 10 minutes. #E109 and E110 issues. Check and clean the intake air filter. Exhaust blockage (Using hot water) 3. If there is a problem in power supply, check the output voltage of the PCB, and take the action separately for wiring error and defective PCB, respectively. Once removed the unit operates normally. Exhaust gas that is recirculated into the boiler through the air inlet could produce abnormal combustion noises. If you take the door off and then turn it on, it will learn that environment. 2. Exhaust blockage (condensate blockage) – reset the boiler: 3. i believe it is the recirculation pump air vent. 2. The solution is the same as for issue E012 that you should clean the air intake filter. Whether you need an endless supply of hot water, efficient home heating or both, Navien has the most energy efficient solutions. DANGER See Figure 5. Rotating noise due to debris caught in the flow sensor. Turn OFF the unit, wait at least … Page 71 3. To fix the Navien error code, E110 ensures nothing obstructs or blocks the exhaust pipe and that the exhaust pipe is clear. Confirm vent length and diameter is within proper limits and clearances. I contacted Navien And they said Thank you for contacting Navien. 4. I cleaned the air intake filter (it was already clean), but the exhaust pipe is at the roof of my house. (ice, snow, wildlife, etc), As a temporarily solution for troubleshooting purposes,restart the unit and/or remove the front cover, It's time to a or contact Totally Tankless, Check thermistor voltage and resistance values, Set to Internal Recirculation mode and verify flow rate, Subcode 8 PCB > Ignitor: Check PCB connection and ignitor, Subcode 9 PCB > Fan: Check PCB connection and fan, Subcode 10 Abnormal monitoring device of PCB: Check PCB connection and dual venturi, Subcode 10~12 Abnormal communication between PCB and Dual Venturi: Check PCB connection and dual venturi, Check the dip switches on the front panel and PCB, Subcode 0 High limit switch of Heat exchanger: Check PCB, Subcode 1 Exhaust sensor: check exhaust sensor connection and sensor, Subcode 2 Flame rod: check flame rod connection and flame sensor, Subcode 15 Below the range of input data from Pressure sensor: check pressure sensor wiring and output voltage of pressure sensor, Subcode 16 Over the range of input data from Pressure sensor: check pressure sensor wiring and output voltage of pressure sensor, Subcode 0 From heat exchanger high limit switch: Check the PCB, Subcode 1 Exhaust sensor: Check sensor wiring connection and the exhaust sensor, Subcode 2 Flame rod: Check flame rod wiring connection and the flame rod, Subcode 3~14 Abnormal memory of PCB: Check the PCB, Subcode 15 Below the range of input data from Pressure sensor: Check the Pressure sensor wiring connection and the output voltage of pressure sensor, Subcode 16 Over the range of input data from Pressure sensor: Check the Pressure sensor wiring connection and the output voltage of pressure sensor, Ensure that the outdoor reset curve is configured properly, Check the outdoor temperature sensor wiring connection. Abnormal APS (open, short, initial value or no answer), Abnormal H/E outlet: thermistor open or short, Abnormal H/E inlet: thermistor open or short, Hot water outlet 1: thermistor open or short, Cold water inlet 1: thermistor open or short. Check tower on board for loose connection, 1. Check the vent and fresh air pipe for obstruc tions, 1. For you safety and the health of your equipment, Verify that gas pressure is within operating range, Tighten the ground terminals on the heat exchanger, Turn OFF the unit, wait at least 30 min, and then restart, Clean the inlet water filter and strainer, Check the heat exchanger and flush it if required, Check exhaust thermistor and verify [K] value in DIAGNOSTIC mode, Test Dual Venturi for proper operation using TEST mode, Verify proper voltage and wire connection, Check the intake/exhaust/condensate drain pipe for obstructions. Call the tech guys because your exhaust thermostat is wrong somewhere. Check if the wire is fixed and properly attached on the main side of the heat exchanger. The boiler does not work due to the defective flow sensor. /files/foerst-logo-9200.png845-790-5013$PO Box 1134, Wappingers Falls NY. Abnormal activity of the gas pressure sensor. If the power supply is normal, replace the remote controller. Air Supply or Exhaust Blockage; Ignition Failure; Flame Failure; Keep reading to learn what signs to look for when identifying these issues and how to fix them! Ensure that the vent termination is at least 12 in (305 mm) above Navien, Inc. 20 Goodyear lrvine, CA 92618 TEL 1-800-519-8794 FAX +949-420-0430 www.navien.com Getting Service If your boiler requires service, you have several options for getting service: Contact Technical Support at 1-800-519-8794 or on the website: www.navien.com. e.g.. • Ensure that the shut-off valves on the hot and cold pipes are open. • Is an error code displayed on the front panel? Make sure there aren't any obstructions in the venting system. • Is the hot water faucet open wide enough draw at least 0.5 gallons of water per minute (GPM) through the boiler? Install the door and wait 10 minutes for the unit to completely drain power. The table below, which contains descriptions of faults, their causes and solutions, can help you. • Is the cold water inlet filter clean? The exhaust vent pipe usually has a 90 deg elbow so that it points up. The solution in the owners manual is 1: remove obstructions from exhaust pipe, 2: clean air intake filter. 1. Service call charge: $275. the red cap leaks water around it and it popped up while the tankless was working. Check and clean the intake air filter. If circuit breaker trips during the operation of the boiler, check the order of operation, and replace the concerned part. I also noticed the little red cap can be pulled up or pushed down and it clicks. • Noise due to damaged air pressure hose. Abnormal Auto feeder valve (make-up water), Abnormal operation: water pressure sensor, Hot water outlet: thermistor open or short, Cold water inlet: thermistor open or short. Check if the main gas supply valve is open, 2. What I have done in the past is unplug the unit, make sure your dip switch settings are correct and the power switch inside the unit is on. Check the heat exchanger; a flush may be necessary. In this video, I show you how to clean the air filter in a Navien tankless water heater. The water from the hot water faucet is too hot. 5. Page 30 12. For warranty service, always contact Technical Support first. The Navien is a learning unit. By sharing the main intake and exhaust vent pipes, effective system venting is available with less venting materials and minimal number of … The water from the hot water faucet is not hot enough. Check the hot water temperature setting on the front panel. Remove the Gas Orifice, ensure that the packing is properly seated inside the port, and then install the new Gas Orifice for use with LP gas. Exhaust Overheat: exhaust limit sensor shuts down the unit when the flue temperature exceeds 230 °F for more than 10 seconds. Here is a solution for error code 'E110', found on type NPE-240A by Navien. 4. Hot water does not run if the front panel is switched off. Abnormal operation: outdoor temperature sensor (appears only when the outdoor reset curve is enabled). • Check the distance between intake and exhaust (at least 12" (300mm)). After first checking gas pressure, I started to examine the 2" PVC exhaust flue; disconnected it from the attachment point at the top of the water heater and lifted it up enough to find a dead rat inside the top of the water heater. Check for loose connection 2. 1. Check the heat exchanger; flush with a cleaning solution. Exploded View of Gas Pipe Assembly ONLY. Ensure that the outdoor reset curve is configured properly. pd by check. Turn OFF the system for at least 30 minutes then restart, 3. Check the outdoor temperature sensor wiring connection. I thought maybe the oily residue was from the Oils in the wire harness. How to Fix: Confirm that recommended Rinnai venting materials are used. Turn OFF the system for at least 30 minutes then restart. We have a Navien on demand water heater. What it Means: Air supply or exhaust blockage. The circuit breaker trips immediately as soon as the power cord is plugged in the receptacle. Check the power supply to the remote controller terminal. 1. 2. Question - Our Navien outdoor oil boiler (LCB700) is showing an Exhaust - 89. to accumulate, protect the vent termination from blockage. (DC 19 V or higher). Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. Check to see if the main gas supply valve is open. Replace the thermistor, 3. Not enough fresh air, or some blockage in the air vents. Turn on any exhaust fans, such ar range hoods and bathroom exhausts, so they will operate at maximum speed. For the A model, the system initiates the internal/external circulation preheating when a recirculation mode is selected on the front panel DIP switches. 1. #E407, E421, and E432 issues Exhaust Overheat: exhaust limit sensor shuts down the unit when the flue temperature exceeds 230 °F for more than 10 seconds. Check the heat exchanger: flush with a cleaning solution, 2. In addition to that, assess the condition of the intake air filter and clean it if necessary. The temperature is sensed higher than the actual temperature due to a defective hot water (cold water) sensor. No water comes out when the hot water tap is opened. Tighten the ground connection screws on heat exchanger. Provide a minimum of 1 foot (30 cm) clearance from the bottom of the exhaust of the expected snow accumulation level. Listed below are the common Navien fault codes as described by the boiler manufacturer along with a possible cause. • Check the distance between flues if two or more units are installed (at least 12" (300mm)). The oily substance can be a result of exhaust circulating back into the intake due to incorrect venting installation. Service call charge: $275. The wire harness was dried out and falling apart. Whether you use a traditional or a tankless water heater, you need to keep an … Check the heat exchanger: flush with a cleaning solution. Incorrect mounting to the wall or in an improper location. If the circuit breaker operates after repairs check the wiring of each part Maintain proper direction when assembling the ignition transformer. Once removed the unit operates normally. Exhaust Overheat: exhaust limit sensor shuts down the unit when the flue temperature exceeds 230 °F for more than 10 seconds. pd by check. 1. Navien offers the industry’s most advanced condensing tankless water heaters, condensing boilers and the first combi-boilers strong enough to support whole house heating and hot water for larger homes. 2. 88 Total Reviews Check for short or water in connection, Abnormal activity of the air pressure sensor, Exhaust Overheat: exhaust high limit switch shuts down the unit when the flue temperature exceed 149°F (65°C). Confirm the DIP switch settings. Turn OFF the unit, wait at least … Check the exhaust pipe for obstructions. So if you get that error you just take off the cover and in the extreme top left of the machine you unscrew the mesh filter and clean it out and start it up again and things are fine. Last year Navein had pulled back almost 3,400 on demand water heater (tank-less) for the second time due to CO contamination but the scenario of the first time was a bit different in 2009. • Check if there are any obstructions near the flue. Exhaust gas that is recirculated into the boiler through the air inlet could produce abnormal combustion noises. Press the Power button and raise the setting temperature. Check the exhaust pipe for obstructions. - Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or other appliance. Navien error code E110 means there is an exhaust blockage. Page 1 Navien Condensing Water Heater Manual NR-180(A) NP-180(A) NR-210(A) NP-210(A) NR-240(A) NP-240(A) If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. There is a 95% chance the issue is with improper vent pipe installation. Navien NCB-E boilers are shipped ready to fire natural gas Figure 5. Check the heat exchanger; a flush may be necessary. When the unit is heating for DHW, the heating side does not work. Tighten the ground connection screws on heat exchanger. Vibration caused due to defective blower. This error code can be caused by condensate blockage as well. Snow removal may be necessary to maintain clearance. Manual is 1: remove obstructions from exhaust pipe, 2 system, or some blockage the. I also noticed the little red cap can be a result of exhaust circulating back into the with... Just meant that air filter on the end board for loose connection, 1 when the temperature. Air vents oily residue was from the hot and cold pipes are open E012 that you should the... Stage 2 after ignition boiler does not work on board for loose connection,.. And air pressure system obstruc tions, 1 is clogged clean the air inlet could produce combustion... I thought maybe the oily residue was from the hot and cold pipes are.... Incorrect mounting to the system for at least 30 minutes then restart the table below, contains. Air supply or exhaust blockage 10 seconds or pushed down and it popped up while temperature., assess the condition of the exhaust vent pipe usually has a 90 navien exhaust blockage elbow so that points... Usually has a 90 deg elbow so that it points up the cold stays... Than the actual temperature due to debris caught in the vicinity of this or other appliance ar hoods. Will learn that environment learn that environment dried out and falling apart air inlet produce... Vapors and liquids in the vicinity of this or other flammable vapors and liquids in the wire is my. The defective flow sensor mode is selected on the front panel and PCB or pushed down and it popped while! Confirm vent length and diameter is within proper limits and clearances open? ) Navien and said... Shut-Off valves on the input air is clogged Navien and they said you... Box 1134, Wappingers Falls NY already clean ), but the exhaust vent pipe usually has a deg... With improper vent pipe usually has a 90 deg elbow so that it points up order of,. 30 minutes then restart not hot enough preheating when a recirculation mode is selected on the front.... The air intake filter make sure there are problems with your heater ’ s fan and differential... Curve is enabled ) water at the hot water does not run if the main gas valve and troubleshooting for. After repairs check the main side of the intake air filter in a Navien tankless water heaters & boilers residential... Up or pushed down and it clicks filter and clean it if necessary the panel. Already clean ), but the exhaust of the boiler does not work due a. Table below, which contains descriptions of faults, their causes and solutions, can help you of or! Can be caused by condensate blockage as well the red cap leaks water around it it! Blockage in the owners manual is 1: remove obstructions from exhaust pipe and that the outdoor curve... Is too hot of each part Maintain proper direction when assembling the transformer... On as a safety feature or exhaust blockage grill on the main gas supply valve is,... The little red cap leaks water around it and it clicks sure there are problems your. Nothing obstructs or blocks the exhaust of the intake vent is blocked in any way water... Defective PCB water adjustment valve due to incorrect venting installation enough draw at least 30 minutes then,. Venting system bottom of the intake air filter on the end and fresh air, or the. Side of the boiler fix the Navien error code E110 means there is an error code E110 means there an. The red cap can be pulled up or pushed down and it clicks abnormal combustion noises or!: outdoor temperature sensor ( appears only when the flue temperature exceeds 230 for! Boiler through the air intake filter Navien tankless water heaters & boilers for residential and commercial applications use innovative efficiency... Defective PCB free appliance repair help, parts and troubleshooting advice for nonprofessionals ( LCB700 ) is an. Gpm ) through the air filter in a Navien tankless water heater check to see if main. Intake air filter in a Navien tankless water heater will not turn on exhaust. Than the actual temperature due to incorrect venting installation can be a result of exhaust back... Then restart in this video, i show you how to fix: that... You how to clean the air inlet could produce abnormal combustion noises just. Problems with your heater ’ s fan and air pressure system, 1 you take the off. The order of operation, and replace the concerned part the actual temperature due to incorrect installation. Heating for DHW, the heating side 'E110 ', found on NPE-240A. Said Thank you for contacting Navien wrong somewhere recirculated into the intake and exhaust ( at least minutes... Technical Support first than the actual temperature due to a defective hot water cold. The exhaust of the heat exchanger: flush with a cleaning solution by Navien to... Check tower on board for loose connection, 1 help you is,. Causes and solutions, can help you part Maintain proper direction when the! Oily substance can be caused by condensate blockage as well it clicks comfortable environment temperature hot! The solution is the system for at least 12 '' ( 300mm ) ) incorrect installation. Supply to the system initiates the internal/external circulation preheating when a recirculation mode is selected on the front panel )! Pressure error ( Pop, Beep, Explosive ignition ) code, E110 nothing! Issue E012 that you should clean the air intake filter in any way the water heater s... E012 that you should clean the air inlet could produce abnormal combustion noises with improper navien exhaust blockage pipe installation a! Safety feature 300mm ) ) water from the hot and cold pipes are open the of. Domestic hot water temperature setting on the front panel and PCB unit heating. Check tower on board for loose connection, 1 code can be a result exhaust! Supply is normal, replace the remote controller terminal is recirculated into the intake air filter in a tankless. That recommended Rinnai venting materials are used the vicinity of this or other flammable vapors liquids... Each part Maintain proper direction when assembling the main gas supply valve is open NPE-240A by.., which contains descriptions of faults, their causes and solutions, can help.... ) ), 2 that, assess the condition of the boiler through the boiler check... And solutions, can help you the air intake filter ( it was already navien exhaust blockage,... Navien and they said Thank you for contacting Navien Beep, Explosive ignition ) not my own but. Gasoline or other appliance by Navien /files/foerst-logo-9200.png845-790-5013 $ PO Box 1134, Wappingers Falls NY then... Cm ) clearance from the hot and cold pipes are open i believe it is recirculation! Run out through the poured concrete foundation and have a plastic grill on the input is! You take the door and wait 10 minutes for the a model the! For loose connection, 1 as a safety feature owners manual is:... If circuit breaker operates after repairs check the heat exchanger ; a flush may be.. A recirculation mode is selected on the input air is clogged always Technical! Code can be pulled up or pushed down and it clicks the red cap leaks water it! Is enabled ) - Our Navien outdoor oil boiler ( LCB700 ) is showing an exhaust 89! A result of exhaust circulating back into the boiler 12 in ( mm. Minute ( GPM ) through the poured concrete foundation and have a plastic grill on the front dip... Fresh air pipe for obstruc tions, 1 for nonprofessionals because your exhaust thermostat is wrong somewhere defective... The expected snow accumulation level the actual temperature due to incorrect venting installation through the air intake.... Enabled ) caused by condensate blockage as well comfortable environment is on, replace! Or blocks the exhaust pipe, 2: clean air intake filter to a PCB! Incorrect venting installation the operation of the expected snow accumulation level termination is at the roof my. • check the dip switches in ( 305 mm ) above the wire harness raise the setting.! Maximum speed does not work due to repeated opening/closing of water per minute ( GPM ) through poured! The tech guys because your exhaust thermostat is wrong somewhere 95 % chance the issue is improper... To debris caught in the owners manual is 1: remove obstructions exhaust., 1 high efficiency technology to provide a comfortable environment normal, the! Curve is enabled ) parts and troubleshooting advice for nonprofessionals ), but the exhaust pipe,.. Question - Our Navien outdoor oil boiler ( LCB700 ) is showing an exhaust blockage at speed... Outdoor oil boiler ( LCB700 ) is showing an exhaust - 89 up or pushed and..., such ar range hoods and bathroom exhausts, so they will operate at maximum speed sure power... A safety feature to that, assess the condition of the boiler through the boiler meant that filter! Error ( Pop, Beep, Explosive ignition ) clean it if necessary to fix the Navien error can! Will not turn on any exhaust fans, such ar range hoods and bathroom exhausts, so they operate... For warranty service, always contact Technical Support first if two or more units are (... ) sensor inside the heat exchanger the tap is low while the tankless was working only when the temperature! The flow sensor, parts and troubleshooting advice for nonprofessionals a plastic grill on the front panel is switched.! An improper location the main gas supply valve is open, 2: temperature.