Pentair MasterTemp 400 Not Connecting to Easytouch

[ajw22]

Got it rewired. The heater can no longer be turned on at the unit itself, BUT it still won't turn on. I "think" that's progress as now we've eliminated the wiring as the issue. Are we back to the relay? How can I determine which relay is the one for the heater?

There is only one dedicated relay for the gas heater.

EasyTouch Control System: Insert the conductors into the GAS HEATER two-screw terminals (J19) on the motherboard.

 

[ajw22]

J19 on the corner of the board...

 

[willbaker13]

Do those "go bad?"

 

[ajw22]

Do those "go bad?"

See post #2.

You can test the relay with a multimeter.

Could be a bad relay driver chip.

 

[willbaker13]

Replaced the relay driver and all is well now. I really appreciate your advice/guidance!

 

[ajw22]

I really appreciate your advice/guidance!

Glad we can help.

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