Navien CH-180, Service Manual, Page: 56 / 155

54
5. Troubleshooting
5.1. Error Code List
Error
Code
Reason Reset
E001
E002
E003
E004
E005
E006
E007
E008
E009
E010
E011
E012
E013
E015
Self-diagnostic / Action
1. Clean the inlet water filter
2. Check the heat exchanger; flush with a
cleaning solution
1. Check if the main gas supply valve is open
2. Check the igniter for spark
1. Check if the main gas supply valve is open
2. Check the igniter for spark
1. Ensure ground wire is connected
2. Check the igniter for spark
1. Check the thermistor
2. Check for loose connection
3. Replace the thermistor
1. Check the thermistor
2. Check for loose connection
2. Replace the thermistor
1. Check the thermistor
2. Look for short or water in connection
3. Replace the thermistor
1. Check and clean the air filter
2. Check and clean the fan motor
3. Check tower on board for loose connection
1. Check the vent and fresh air pipe for obstruc
tions
2. Check and clean the air filter
3. Check hoses and condensate drain
1. Check the main gas line (valve open?)
2. Check intake air pipe
3. Check ground wire
4. Check power supply
5. Clean flame rod
1. Check the pump
2. Remove air from the pipe
1. Check power supply
2. Check the Emergency Switch
1. Check the water pressure sensor
1. Wait until water supplement is terminated.
Water is boiling inside
the heat exchanger
Ignition failure
False flame detection
Heating supply outlet:
Thermistor–open
Heating supply outlet:
Thermistor–short
Hot water outlet:
Thermistor–open
Hot water outlet:
Thermistor–short
Abnormal fan motor
activity
Abnormal air pressure
Flame loss
Abnormal pump
Abnormal control board
High water pressure
Low water pressure
Manual
Manual
Automatic
Automatic
Automatic
Automatic
Automatic
Manual
Manual
Manual
Manual
Manual
Automatic
Automatic
© Navien Ameri c a I n c . 20 1 0 CH series servi c e Manua l Version 1 .0