A
abbot2
Hi all,
I've got a Vaillant TurboMax 242E combi boiler, it was working fine so far, but this morning when I tried to turn on the CH (using external thermostat), CH did not start, CH demand indicator does not turn on, and there is no hot water in CH (but tap hot water works fine). I checked PCB connections, and tried linking PCB terminals 3 and 4 together (which connect to external thermostat) as troubleshooting guide suggests, but CH demand still does not light up. Troubleshooting guide now says "replace PCB" at this point. Is this really the only solution? Boiler was running fine and CH did work yesterday.
Thanks for your advise!
I've got a Vaillant TurboMax 242E combi boiler, it was working fine so far, but this morning when I tried to turn on the CH (using external thermostat), CH did not start, CH demand indicator does not turn on, and there is no hot water in CH (but tap hot water works fine). I checked PCB connections, and tried linking PCB terminals 3 and 4 together (which connect to external thermostat) as troubleshooting guide suggests, but CH demand still does not light up. Troubleshooting guide now says "replace PCB" at this point. Is this really the only solution? Boiler was running fine and CH did work yesterday.
Thanks for your advise!