Navien CH-180 User's Operation Manual - Error Code Guide
E001
E002
E003
E004
E005
E006
E007
E008
E009
E010
E011
E012
E013
Water is boiling inside the
heat exchanger
Low pressure on heating
side
Ignition failure
False flame detection
Space Heating supply :
Thermostat-open
Space Heating supply :
Thermostat -closed
DHW Hot water supply:
thermostat -open
DHW Hot water supply:
thermostat -short
Abnormal fan motor
activity
Abnormal air pressure
High pressure on heating
side
Flame loss
Abnormal Pump Activity
If any of the above solutions do not resolve the problem with the combination boiler,
contact Navien’s Technical department at 1-800-519-8794.
1. Clean the inlet water strainer (part#25).
2. Check the heat exchanger; remove
and clean with a cleaning solution.
1. Turn off the system.
2. Turn the unit back on.
1. Check to see if the main gas
supply valve is open.
2. Check that the power is “ON”.
3. Check the igniter for spark (part#18).
1. Ensure ground wire is connected.
2. Check the igniter for spark.
1. Check the thermostat.
2. Replace the thermostat.
1. Check the thermostat.
2. Replace the thermostat.
1. Check the thermostat.
2. Replace the thermostat.
1. Check the thermostat.
2. Replace the thermostat.
1. Check and clean the intake air filter.
2. Check and clean the fan motor.
1. Check the exhaust pipe for obstructions.
2. Check and clean the intake air filter.
1. Turn off the system.
2. Remove pump drain coke.
3. Drain water to release pressure
4. Re-plug the pump
5. Turn the unit back on.
1. Check the main gas line (valve open?).
2. Check the intake air pipe.
3. Check ground wire.
4. Check power supply.
1. Check the pump.
2. Replace the pump.
Error Code
Reason
Self-diagnostic / Action