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TFP, The Mastertemp 400 is connected to an intellitouch. It was working the previous evening, when I went to turn it on from the panel in my house the panel says its heating, but the heater did not turn on. I tried turning it on manually through the service panel. I turn the mode to service...

I had a mastertemp 400 that would turn on, blower would turn on, would blow cold air, the. Cycle 3 times and give a service heater light. I flipped over panel, no error codes. Opened front panel and fenwal has no light. Changed fenwal and it was blinking 3 times, ignition issue. Checked igniter...