Troubleshooting; Error Codes And Checkpoints - Noritz NRC83-DV Field Manual

5. Troubleshooting

Error Codes and Checkpoints (With optional remote controller connected.)
Display
05
10
11
12
14
16
20
21
29
30
31
32
33
35
41
410
51
56
59
61
63
65
66
70
71
72
73
760
90
94
99
(F) 76
*In a quick connect multi-system, "F##"(except F76) indicates an error code from the secondary unit (unit without a remote).
The ON/OFF condition of the neutralizer water level electrode can be checked using the maintenance monitors. When maintenance monitor number
19 reads "000", the condition of the electrode is normal. When this monitor reads "111", the condition of the electrode is abnormal.
Description
Diagnosis Point (Trouble Point)
Service Reminder Flush heat exchanger and/or service the water treatment device.
Check for abnormal combustion, Check flue for blockage or
Combustion Abnormality
obstruction
Is gas valve open, Check gas type, Check burner window for flame,
Ignition Failure
Check flame rod connection, Check igniter connection, What size
is gas line, Is the LP tank full
Flame Rod Does Not
Is gas valve all the way open, Check gas type, Check flame rod
Detect Flame (Secondary
connection, What size is gas line, Is the LP tank full
Flame Fault Detection)
Check connection of overheat cutoff fuse, Check for damage of
fuse
Abnormally High Output
Check outlet water temperature, Is the water hard, Is the water
Temperature
pressure less than 25 PSI, Is there a clogged pre-filter or strainer
High Limit Switch
Check high limit switch connection, Is the water hard
Pressure Switch
Check pressure switch, Check fan motor, Check flue for
Abnormality
blockage or obstruction (For N-1321M-ASME)
Neutralizer Water Level
Check for neutralizer and/or drain pipe blockage, Check for proper
Electrode Abnormality
connection of water level electrode
Freeze Protection
Check freeze protection thermostat connection
Thermostat
Inlet Thermistor
Check inlet themistor connection
Abnormality
Outlet Thermistor
Check outlet themistor connection
Abnormality
Heat Exchanger
Check heat exchanger thermister connection
Thermistor Abnormailty
Exhaust Thermistor
Check exhaust themister connection
Abnormality
Flow Sensor Abnormality
Check flow sensor for debris and/or damage
Multi-System Flow
Check flow for blockage or obstruction
Imbalance Error
Check flow sensor and filter for debris and/or damage
Check for proper connection of gas solenoid valves. Check for
Gas Solenoid Value Error
damage to gas solenoid valve connectors.
Check flow for blockage, Check CCP valve(s) for proper
CCP Valve Abnormality
operation with System Controller
Check flue for blockage or obstruction
Combustion Abnormality
Check gas pressure
Fan Motor Abnormality
Check that the fan is rotating
Check for proper pump operation
Recirculation Pump Error
Check recirculation hot water supply pipe
Main Water Control Valve
Call Noritz Technical Supprt (866-766-7489)
Bypass Water Control Valve
Call Noritz Technical Supprt (866-766-7489)
Circuit board Abnormality Circuit board failure
Gas Solenoid Valve
Check gas valve connections, Check for damage to gas valve
Abnormality
Flame Rod Abnormality
Check for flame on burner
Check circuit board for damage and proper connections,
Improper Circuit Board
Unplug/replug power to unit if wiring was altered during
Setting
operation
Remote Controller Check Remote Controller Cord, Check wiring connections if
Transmission Abnormality Multi-System or Quick-Connect is in use
Combustion Abnormality Check for abnormal combustion
(Warning indication)
Check flue for blockage or obstruction
Check for abnormal combustion
Combustion abnormality
Check flue for blockage or obstruction
Check that flame ignites all across the burner
High Exhaust temperature
Check for abnormal combustion.
Combustion Abnormality
Check for abnormal combustion
Check flue for blockage or obstruction
Multi-System
Check for proper connection of the Quick-Connect Cord or
Communication Error
Multi-System Controller
26