If a fault occurs during operation, the system locks out and the display starts to ash. The rst character is an “E” or “b” and the following two indicate the code
of this fault, as indicated in the table below.
To unlock the system:
• Press "RESET" on the MCBA interface.
• If the fault repeats, check the error codes below to solve the problem.
Codes
Fault descriptionFault solutions
E 00
Abnormal flame signal detected
1. Check the wiring (short circuit in the 24 V wiring)
2. Check the electrode
3. Replace the MCBA (water damage)
E 02
No flame presence after five start-up attempts
1. Check the ignition wiring
2. Check the electrode and its position
3. Check the burner gas level
E 03
Gas valve or triac error Replace the rectifier or the gas valve
E 04
Durable lockingPress “RESET”
E 05
No flame detection or poor feed current quality
1. Check the electrode gap
2. Check resistance k of the electrode cable
3. Stabilisation of the current
E 06
Detection of an Input errorCheck the Input and press “RESET”
E 07
Gas valve relay errorIf the problem persists after two “RESET” attempts, replace the MCBA
E 08
The air pressure switch did not closeCheck the air pressure switch
E 11
EPROM errorIf the problem persists after two “RESET” attempts, replace the MCBA
E 12
Max input thermostat open or 24 V fuse has blown
1. Check the limit thermostat
2. Check the 24 Volt fuse of the MCBA
3. Link 12-13 missing
E 13
Internal errorIf the problem persists after two “RESET” ATTEMPTS, replace the MCBA
E 14
Water in the 24 Volt circuitCheck the 24 Volt circuit and dry if necessary [sensors, terminal, etc.]
Unable to reset (E 14) fault on Heatmaster 71 what are the relevant checks before changing board. pumps ok fans ok resistance reading on sensors ok
Submitted on 24-6-2021 at 18:13
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