S
sean33
Hi Everyone
Can you help please. The DHW on a28CDI is going very hot, and then the boiler shuts off for 10-20 seconds, and then fires backup again. I have de-sludged the system (twice), replaced the heat exchanger with a new one, installed a new thermostat, cleaned out the diverter valve, re-greased it and installed a new diaphram. The pump is on setting level 3. It also get very hot. Could it be the PCB? Any ways of testing this ? thanks
Can you help please. The DHW on a28CDI is going very hot, and then the boiler shuts off for 10-20 seconds, and then fires backup again. I have de-sludged the system (twice), replaced the heat exchanger with a new one, installed a new thermostat, cleaned out the diverter valve, re-greased it and installed a new diaphram. The pump is on setting level 3. It also get very hot. Could it be the PCB? Any ways of testing this ? thanks