Circuit breaker operates while the boiler is running. Make sure the power is on, and plugged into the outlet with the correct voltage. #E109 and E110 issues. • Ensure that the shut-off valves on the hot and cold pipes are open. Rotating noise due to debris caught in the flow sensor. • Check if there are any obstructions near the flue. 4. Exhaust gas that is recirculated into the boiler through the air inlet could produce abnormal combustion noises. Clean out filters that belong to the heating side. Check for loose connection 2. 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. /files/foerst-logo-9200.png845-790-5013$PO Box 1134, Wappingers Falls NY. the red cap leaks water around it and it popped up while the tankless was working. 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 heat exchanger thermistor connection. 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. Once removed the unit operates normally. Check the heat exchanger: flush with a cleaning solution, 2. Check and clean the intake air filter. The exhaust vent pipe usually has a 90 deg elbow so that it points up. Check the heat exchanger; flush with a cleaning solution. The circuit breaker operates at switchover to burner stage 2 after ignition. 1. i believe it is the recirculation pump air vent. Check the power supply to the remote controller terminal. Snow removal may be necessary to maintain clearance. The temperature is sensed higher than the actual temperature due to a defective hot water (cold water) sensor. 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. 5. Check the hot water temperature setting on the front panel. Check the vent and fresh air pipe for obstruc tions, 1. The water from the hot water faucet is cold or turns cold and stays cold. • Noise due to damaged air pressure hose. 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. Hot water does not run if the front panel is switched off. The table below, which contains descriptions of faults, their causes and solutions, can help you. Whether you need an endless supply of hot water, efficient home heating or both, Navien has the most energy efficient solutions. Turn OFF the system for at least 30 minutes then restart, 3. Check the Main and Panel PCB. Provide a minimum of 1 foot (30 cm) clearance from the bottom of the exhaust of the expected snow accumulation level. 5. ► Replace the dual venturi. Check the outdoor temperature sensor wiring connection. Abnormal activity of the gas pressure sensor. To fix the Navien error code, E110 ensures nothing obstructs or blocks the exhaust pipe and that the exhaust pipe is clear. Once removed the unit operates normally. DANGER See Figure 5. 1. When the unit is heating for DHW, the heating side does not work. this is not my own pic but same thing. The solution in the owners manual is 1: remove obstructions from exhaust pipe, 2: clean air intake filter. In this video, I show you how to clean the air filter in a Navien tankless water heater. 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. There is a 95% chance the issue is with improper vent pipe installation. Make sure there aren't any obstructions in the venting system. Install the door and wait 10 minutes for the unit to completely drain power. 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. Check the exhaust pipe for obstructions. Check the dip switches on the front panel and PCB. 1. Check the exhaust pipe for obstructions. Noise due to repeated opening/closing of water adjustment valve due to a defective PCB. If the intake vent is blocked in any way the water heater will not turn on as a safety feature. I also noticed the little red cap can be pulled up or pushed down and it clicks. Press the Power button and raise the setting temperature. Usually that just meant that air filter on the input air is clogged. Exhaust blockage (condensate blockage) – reset the boiler: We have a Navien on demand water heater. Confirm vent length and diameter is within proper limits and clearances. 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. Exhaust gas that is recirculated into the boiler through the air inlet could produce abnormal combustion noises. The unit was installed in 2016. What it Means: Air supply or exhaust blockage. Here is a solution for error code 'E110', found on type NPE-240A by Navien. • Check for cross plumbing between the cold and hot water lines. Service call charge: $275. How to Fix: Confirm that recommended Rinnai venting materials are used. Be careful that wire is not compressed when assembling the main gas valve. If circuit breaker trips during the operation of the boiler, check the order of operation, and replace the concerned part. If you take the door off and then turn it on, it will learn that environment. 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! 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. The water from the hot water faucet is not hot enough. 88 Total Reviews 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. 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. Not enough fresh air, or some blockage in the air vents. The circuit breaker trips immediately as soon as the power cord is plugged in the receptacle. Tighten the ground connection screws on heat exchanger. Exhaust Overheat: exhaust limit sensor shuts down the unit when the flue temperature exceeds 230 °F for more than 10 seconds. This error code can be caused by condensate blockage as well. Exhaust Overheat: exhaust limit sensor shuts down the unit when the flue temperature exceeds 230 °F for more than 10 seconds. 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. 1. Check and clean the intake air filter. Turn OFF the unit, wait at least … Page 44: Setting The Dip Switches 6. Check the heat exchanger; a flush may be necessary. Ensure that the vent termination is at least 12 in (305 mm) above 1. Abnormal operation: outdoor temperature sensor (appears only when the outdoor reset curve is enabled). The boiler does not work due to the defective flow sensor. Replace the thermistor, 3. Turn OFF the unit, wait at least … No water comes out when the hot water tap is opened. 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. Call the tech guys because your exhaust thermostat is wrong somewhere. I thought maybe the oily residue was from the Oils in the wire harness. Check tower on board for loose connection, 1. Is there power to the system, or is the system in stand by? Turn on any exhaust fans, such ar range hoods and bathroom exhausts, so they will operate at maximum speed. Service call charge: $275. to accumulate, protect the vent termination from blockage. Turn OFF the unit, wait at least … 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. The Navien is a learning unit. Check if the main gas supply valve is open, 2. Navien error code E110 means there is an exhaust blockage. Page 71 3. pd by check. Page 30 12. Add make-up water to the system if necessary. • Is an error code displayed on the front panel? Find the answer to this and other HVAC questions on JustAnswer 3. 2. • Is the hot water faucet open wide enough draw at least 0.5 gallons of water per minute (GPM) through the boiler? Exhaust Overheat: exhaust limit sensor shuts down the unit when the flue temperature exceeds 230 °F for more than 10 seconds. Incorrect mounting to the wall or in an improper location. 2. Tighten the ground connection screws on heat exchanger. Exhaust Overheat: exhaust limit switch shuts down the unit when the flue temperature exceeds 230*F(110*0) for more than 10 seconds. • Check the distance between intake and exhaust (at least 12" (300mm)). 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. The solution is the same as for issue E012 that you should clean the air intake filter. Make sure the boiler is turned on. 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. pd by check. 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). (DC 19 V or higher). Turn OFF the system for at least 30 minutes then restart. I cleaned the air intake filter (it was already clean), but the exhaust pipe is at the roof of my house. Check the heat exchanger: flush with a cleaning solution. Ensure that the system water level is appropriate. If the circuit breaker operates after repairs check the wiring of each part Maintain proper direction when assembling the ignition transformer. termination. Remove exhaust pipe if possible to verify vent E110 blockage. Confirm the DIP switch settings. 2. Vibration caused due to defective blower. There are problems with your heater’s fan and air pressure system. 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). #E407, E421, and E432 issues Exploded View of Gas Pipe Assembly ONLY. Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. e.g.. Gas and air differential pressure error (Pop, Beep, Explosive ignition). Wait until water supplement is terminated. In addition to that, assess the condition of the intake air filter and clean it if necessary. The temperature of hot water at the tap is low while the temperature is high at the hot water outlet. The water from the hot water faucet is too hot. The intake and outlet vent pipes run out through the poured concrete foundation and have a plastic grill on the end. Whether you use a traditional or a tankless water heater, you need to keep an … By sharing the main intake and exhaust vent pipes, effective system venting is available with less venting materials and minimal number of … (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. I contacted Navien And they said Thank you for contacting Navien. 1. - Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or other appliance. • Is the cold water inlet filter clean? Check to see if the main gas supply valve is open. Is the filter on the heating side restricted? Navien NCB-E boilers are shipped ready to fire natural gas Figure 5. 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. 4. Exhaust blockage (Using hot water) 3. Is the system running for domestic hot water (DHW)? If the power supply is normal, replace the remote controller. For the A model, the system initiates the internal/external circulation preheating when a recirculation mode is selected on the front panel DIP switches. Free appliance repair help, parts and troubleshooting advice for nonprofessionals. Exhaust Overheat: exhaust limit switch shuts down the unit when the flue temperature exceeds 230 °F (110 °C) for more than 10 minutes. For warranty service, always contact Technical Support first. Check if the wire is fixed and properly attached on the main side of the heat exchanger. Listed below are the common Navien fault codes as described by the boiler manufacturer along with a possible cause. navien 210A NPE. Problem 1: Mineral Buildup . • Check the distance between flues if two or more units are installed (at least 12" (300mm)). Ensure that the outdoor reset curve is configured properly. 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. • Check the boiler's temperature setting. Question - Our Navien outdoor oil boiler (LCB700) is showing an Exhaust - 89. Check the main gas line (Is the valve open?). 1. The wire harness was dried out and falling apart. Exhaust Overheat: exhaust limit sensor shuts down the unit when the flue temperature exceeds 230 °F for more than 10 seconds. 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