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Try un plugging the transformer for a few seconds, then back on to reset it and see if it helps. Also make sure the micro switch that signals the controller is actually doing it's thing, you should see the cycle advance as the motor valve goes through the different stages of regen. Could be a bad switch or wire harness. Un plug it a re seat the harness.
Did all that. The valve (and the cam that operates the microswitch) isn't moving. I did unplug and re-seat all the harnesses.
The motor valve is failed or the power to it. Do you have a volt meter to see if it's getting power? Should see 28 volts AC to run.
Tried that; thanks. It's there.
It's a bad motor valve then
If the power is there to the motor and it's not running it's bad
At the motor leads.
WHOOPS my bad. There is NO 28 volts AC at the molex plug feeding the motor. Sorry...
Trace it back to where it's coming from on the controller
It could be a bad controller not powering the valve motor
Make sire it's not the connector
power not coming through
Are the wires tight? The pins in the connector not pushed back? Look at the connector pins
No 28 volts AC at the PC board. But the controller is going through that rapid beep-beep-beep...not accepting ANY commands...so do you think the board wants to go fishing and isn't allowed to deliver voltage to the motor?
Sounds like it, yes.
You did un plug it?
For a reset?
Yes, reset...and if I wait a few minutes Error 01 comes up. Even with the motor unplugged.And the only other thing I can think of is...could some telemetry be TELLING the board not to cough up the voltage?
Do you have voltage into the controller?
What is it 28 volts?
A slight bit higher, IIRC
Ok, well it sounds like it's bad then if it won't put out a voltage to the valve motor and run
Okay...we'll go for a new controller board I guess. THANKS for your help Craig!