Rational iCombi Pro Troubleshooting Manual page 18

Error tree: Automatic ignition controller
Service error: 33.2
Unit type: iCombi
Check the complete BUS connection
(all BUS connectors)
Change the gas type, switch the unit off and on again,
set the original gas type, switch the unit off and on
again.
Note: The TechAssistantApp is required to change the
gas type.
Service error: 33.2
Service error 32.2
Does the connected gas type match what is indicated
on the nameplate?
Yes
Error in the gas combustion system
"Blocking error" → after the error has been resolved, automatic reset
Service 33.2
Initialisation error automatic burner control unit
Gas error 48
Automatic burner control unit was not correctly initialised:
Fan speeds incomplete or
Start speed < Min. speed or
Start speed > Max. speed
No BUS connection intact?
Yes
Are the gas speeds completely present in the
No service menu?
MIN < START < MAX
Yes
Use the Recovery software.
1
Switch the unit to the gas type declared on the
No nameplate.
Note: Repeat flue gas check required!
V01 · 05/2021 · RTS/Shof · en-GB