Check the heat exchanger; a flush may be necessary. Find the answer to this and other HVAC questions on JustAnswer What it Means: Air supply or exhaust blockage. Exploded View of Gas Pipe Assembly ONLY. 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. /files/foerst-logo-9200.png845-790-5013$PO Box 1134, Wappingers Falls NY. Not enough fresh air, or some blockage in the air vents. Is there power to the system, or is the system in stand by? Water is boiling inside the heat exchanger, 2. navien 210A NPE. The unit was installed in 2016. If the power supply is normal, replace the remote controller. Check for loose connection 2. Remove exhaust pipe if possible to verify vent E110 blockage. Exhaust Overheat: exhaust limit switch shuts down the unit when the flue temperature exceeds 230 °F (110 °C) for more than 10 minutes. 2. 2. I thought maybe the oily residue was from the Oils in the wire harness. Check the heat exchanger; a flush may be necessary. The oily substance can be a result of exhaust circulating back into the intake due to incorrect venting installation. - Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or other appliance. 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 vent and fresh air pipe for obstruc tions, 1. The exhaust vent pipe usually has a 90 deg elbow so that it points up. Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. Turn OFF the unit, wait at least … Exhaust blockage (condensate blockage) – reset the boiler: #E109 and E110 issues. Check tower on board for loose connection, 1. The wire harness was dried out and falling apart. Exhaust gas that is recirculated into the boiler through the air inlet could produce abnormal combustion noises. How to Fix: Confirm that recommended Rinnai venting materials are used. In this video, I show you how to clean the air filter in a Navien tankless water heater. 1. Turn OFF the unit, wait at least … 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! I cleaned the air intake filter (it was already clean), but the exhaust pipe is at the roof of my house. 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. • Check if there are any obstructions near the flue. The intake and outlet vent pipes run out through the poured concrete foundation and have a plastic grill on the end. Ensure that the outdoor reset curve is configured properly. There is a 95% chance the issue is with improper vent pipe installation. Ensure that the vent termination is at least 12 in (305 mm) above i believe it is the recirculation pump air vent. Confirm vent length and diameter is within proper limits and clearances. If circuit breaker trips during the operation of the boiler, check the order of operation, and replace the concerned part. Check the dip switches on the front panel and PCB. Confirm the DIP switch settings. • Check the boiler's temperature setting. 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. Check the hot water temperature setting on the front panel. 2. this is not my own pic but same thing. Turn on any exhaust fans, such ar range hoods and bathroom exhausts, so they will operate at maximum speed. For warranty service, always contact Technical Support first. Exhaust Overheat: exhaust limit sensor shuts down the unit when the flue temperature exceeds 230 °F for more than 10 seconds. The table below, which contains descriptions of faults, their causes and solutions, can help you. Here is a solution for error code 'E110', found on type NPE-240A by Navien. Exhaust Overheat: exhaust limit sensor shuts down the unit when the flue temperature exceeds 230 °F for more than 10 seconds. 1. 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. Call the tech guys because your exhaust thermostat is wrong somewhere. Check the power supply to the remote controller terminal. Exhaust Overheat: exhaust limit switch shuts down the unit when the flue temperature exceeds 230*F(110*0) for more than 10 seconds. • Is an error code displayed on the front panel? 88 Total Reviews Check the heat exchanger; flush with a cleaning solution. The Navien is a learning unit. Check the outdoor temperature sensor wiring connection. Install the door and wait 10 minutes for the unit to completely drain power. To fix the Navien error code, E110 ensures nothing obstructs or blocks the exhaust pipe and that the exhaust pipe is clear. The water from the hot water faucet is too hot. (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. 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