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Mar 31, 2014
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Alrite iam a gas safe registered engineer I have come across a
Potterton promax he plus combi boiler
No error codes
No Central heating
Hot water is fine
Pump and fan are both fine
Thermostat calls fine the central heating light comes on for a few seconds but then goes off.
The ch temp also is high
I assume it's the diverter valve sticking. There also seems to been some water seepage on top of the diverter valve.
Before replacing parts I would like a second opinion.
I understand that giving out information on gas appliances is dangerous
I couldn't find the gas safe only page. If any moderator's can help me register with the gas safe only forum I would be happy to do so
 
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