25
Error
Function
Possible cause
Suggestion
Fail 1
'My Rinnai'
App
installation:
registration of
WiFi remote
control
Password, internet
connection, wrong security
settings
- Verify the password and the internet connection;
- Verify the safety protocol: select WPA or WPA2.
Fail 2
WiFi module failure
- Restart the system; if the problem persists please contact
a Rinnai technical assistance centre.
Fail 3
Compatibility problems
- Verify the compatibility with the model of boiler in use.
Fail 4
Time-out exceeded for the
registration (10 min.)
- Complete the registration of the WiFi command in 10
min.
02
CH & DHW
Error in reset function
Press the button CH (or DHW) twice, to deactivate and re-
activate the function
07
DHW
Continue use of domestic
hot water (>8h)
-
Stop the domestic hot use and press the button DHW to
reactivate the function;
- In case no one is using hot water, a breakage of the
hydraulic pipeline is possible: call a technician.
11
CH & DHW
Burner flame not detected
- Verifiy that the gas safety valve is open;
- Press the button CH twice to deactivate the heating
function and to re-activate it.
12
CH & DHW
Unusual extinguishing of
the burner
- Verify the gas supply (turn on other gas utilities);
- Contact the gas service dealer or a speciaized technician.
14
CH & DHW
Overheating, safety
circuit's failure
- Turn off the boiler for at least 30 minutes; press the
button CH or DHW. If the code remains, please contact
immediately the Rinnai technical assistance service.
15
CH & DHW
Problem of water
circulation in the hydraulic
system
- Check the boiler's hydraulic feeding;
- Check that the plumbing pipe are not freezed ;
- Verify the presence of air in the hydraulic circuit:
disconnect the electric cable and reactivate the boiler (the
de-aerating function will be reapeated).
16
CH & DHW
Overheating CH
- Verify that at least a thermostatic valve is open;
- Vent the air in the heating circuit;
- Clean return line filter of CH.
18
CH & DHW
Earth not detected
- Call the Rinnai technical assistance center.
19
CH & DHW
High temperature of
exhaust
- Call the Rinnai technical assistance center.
20
CH & DHW
Wrong setting of the
microswitches on PCB
- Call the Rinnai technical assistance center.
23
CH & DHW
Earthquake alarm
31
CH & DHW
CH flow temperature
thermistor failure
- Press button CH (or DHW) twice to deactivate and
activate the function : if the code reappears call the Rinnai
technical assistance service
32
CH & DHW
External temperature
thermistor failure
(external sensor)
- Press the button CH (or DHW) twice to deactivate and
activate the function: if the code reappears call the Rinnai
technical assistance service.
34
DHW
Hot water thermistor failure
- Press the button DHW twice to deactivate and activate
the function: if the code reappears call the Rinnai technical
assistance service.
35
CH
Room thermostat failure
(Rinnai remote control)
- Call the Rinnai technical assistance center.
36
CH & DHW
Antifrost prevention/
thermistor failure
- Press the button DHW twice to deactivate and activate
the function: if the code reappears call the Rinnai technical
assistance center.
