Rinnai FC510N User Manual page 16

Fault Codes
31
32
33
34
62
70
71
Solenoids or Modulating Valve Circuit
72
Burner ODS #1 & Pilot ODS #2 initial
ODS #1
ODS #2
73
Room Temperature Thermistor
Room Temperature Thermistor
Overheat Thermistor
Overheat Thermistor
Combustion Fan Failure
ON/OFF Switch Faulty
value abnormal
P.C Board abnormal
Check thermistor wiring for damage, loose or broken connections or wires.
–
Measure resistance of thermistor
–
Replace Sensor
–
Short circuit, replace thermistor
–
Check thermistor wiring for damage, loose or broken connections or wires
–
Measure resistance of thermistor
–
Replace Sensor
–
Short Circuit, replace thermistor
–
Ensure fan will turn freely
–
– Check wiring harness to motor for damaged and/or loose connections
Measure resistance of motor windings
–
Replace fan motor
–
Check wiring harness from control panel to P.C board for loose or damaged wires or
–
connections.
Replace control panel
–
Check to ensure all gas solenoids or plugged into the solenoid valves.
–
Check to ensure they are plugged into the correct solenoid valve.
–
Check resistance value of all gas solenoid valves
–
Replace defective solenoid.
–
Replace P.C. board.
–
Verify low and high fire gas pressures were properly set.
–
Replace defective ODS Sensor
–
Press the ON/Off button twice to reset heater
–