16
1.4.1 ERROR CODES
Code
Description
Remedy
-
Noticeable reduction in water flow
Inlet water filter needs to be cleaned - Service call.
03
Power interruption during bath fill (water will not flow on
power reinstatement)
Turn off all hot water taps. Press On/Off twice.
05
By-Pass Flow Control
Service call.
10
Air Supply or Exhaust Blockage/Condensate Trap is Full
Ensure condensate line is not bocked - Service call.
11
No ignition / No gas supply
Check gas is turned on at water heater and gas meter or cylinder. -
Service call
12
Flame failure / Low gas flow
Check gas is turned on at water heater and gas meter or cylinder.
Check there are no obstructions to the flue outlet. - Service Call
14
Heat Exchanger Overheat
Service call.
15
Venturi Control
Service call
16
High Outgoing Temperature
Safety shutdown because water heater is too hot. Service call.
17
Venturi Blockage
Service call
19
Electrical Goundig
Service call.
21
Data tansfer Error
Service call.
25
Condensate Pump
Check condensate trap and drain line for blockage. Service call.
32
Outgoing water temperature sensor fault
Service call.
33
Heat exchanger outgoing water temperature sensore fault
Service call.
38
Exhaust Thermistor
Service call.
41
Freeze Protection Thermistor
Service call.
51
Inlet Thermistor
Service call.
52
Gas Valve
Service call.
54
High Exhaust Gas Temperature
Ensure condensate line is not blocked.
Confirm inlet water temperature is not too high.
Service call.
55
Service Soon
I
t’s time for service. The heat exchanger should be flushed to prevent
damage.
Refer to the flushing instruction in the manual
Hard water must be treated to prevent scale build up or damage to the
heat exchanger.
To reset the
55
code, push on the
On/Off
button on the temperature
controller 5 times in 5 seconds.
Service call.
61
Combustion fan fault.
Service call.
63
Recirculation Low Flow
Service call.
65
Water flow control fault
(Does not stop flow properly).
The water flow control valve has failed to close during the bath fill
function. Immediately turn off the water and discontinue the bath fill
function.
Service call.
70
Microprocessor fault.
Service call.
71
Solenoid Valve Circuit.
Service call.
72
Flame sensing device fault.
Service call.
SE
Cascade Diagnostic Display
With cascade connections, display will flash between “SE” and the
selected set temperature when an error codes displayed on any
secondary unit
FF
Maintenance Indicator
Rinnai service performed maintenance.
NO
CODE
Nothing happens when water flow is activated
Verify you have at least the minumum flow rate required to fire unit.
Clean inlet water supply filter.
On new installations ensure hot and cold water lines are not reversed.
