Rinnai FUA-E, Service Manual

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28
Error Codes
Error Fault Action Step
-
Appliance does not operate at all.
No error code on display (if there
is a controller), Acts as though
there is no water going through
the unit and/or it seems electri-
cally dead.
Make sure that if there is a controller, it is on visual
Ensure there is enough water flow R
Check Filter Q
Check for Air lock M
Check power cord is plugged in (if applicable) visual
Check electrical supply is turned on visual
Check Non Return Valves and Mixers in System L
Check Gas Isolating Valves are open visual
Check for short circuits visual
Check Remote control I
Check Power supply voltage N
Check electrical fuses O
Check Sparker B
Check Earth Wire H
Check water flow sensor J
Check transformer P
-
Combustion stops during opera-
tion.
Reset unit if there was a power cut
Check Filter Q
Check Remote control I
Make sure that if there is a controller, it is on visual
Check Gas Supply is okay S
Check Flame Rod C
Check Flue V
Check Earth Wire H
Check Power supply voltage N
-
Cannot adjust the hot water tem-
perature via the controllers - only
if controllers are installed.
Check hot water outlet thermistor K
Check Heat Ex outlet temperature thermistor K
Check Gas Valves are open visual
Check water flow servo G
Check Non Return Valves and Mixers in System L
check bypass servo G
Check Solenoids D
-
Anti - Frost Heater does not oper-
ate.
Check anti frost heater components T
Check frost sensing switch U
-
Upon commissioning the gas
pressure will not achieve correct
high pressure
Check Gas Supply is correct S
Check Gas Filter F
Check flue terminal for blockages visual
Check Flue V
-
Unit makes a loud noise while
operating
Check Combusion Fan A
Check Flue V
Check water flow servo and bypass servo G
- fluctuating temperatures.
Check Non Return Valves and Mixers in System L
Check Hot water outlet thermistor K
Ensure there is enough water flow R
Check Solenoids D
Check water flow servo G
Check Filter Q
Check Gas Supply is correct S