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Issue with Rheem 62-22694-11 Control board

Hello to all,

I have a problem with both heating and cooling. My unit is a Rheem Criterion. No power to a Honeywell mechanical mercury Thermostat. Even when I jumper the switch to make the fan/AC/heat come on, nothing happens. Symptoms are as follows:

Breaker is good.... nothing thrown. Unit receives power.

Rheem Criterion has the 62-22694-11 control board. Both the "PWR" and "OK" LED light up when the blower door button is depressed.....yet at the thermostat, I have no power.

Is there a fuse on the 62-22694-11 that I am missing?
Do I need to replace the 62-22694-11 even though it is showing it has power and is OK?

Thank you for your input

Regards,

Kyle

Comments

  • ZmanZman Member Posts: 5,872
    Have you tried jumping terminals on the board or checking power at the board. A good first step is to eliminate the t-stat and t-stat wiring as the cause.
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • K_RogersK_Rogers Member Posts: 3


    I was thinking that the board had power because of the LED being lit. I haven't tried jumping the terminals on the board. Will comment with the results. BRB
  • K_RogersK_Rogers Member Posts: 3
    This is what I found out:

    On the board :
    Jumper Red and Green will make the fan come on and stay on. No issues.

    Jumper the the Red and Yellow nothing happens - just a hum.

    Tie into the Red and touch the Yellow, it will spark then the fan will come on. AC never comes on, then the fan will stop.

    hmmmmmmm.
  • HVACNUTHVACNUT Member Posts: 3,415
    The hum might be the condenser coming on without the fan.

    What happens R to W? It should run the heat cycle.

    At this point it looks like the board is good. Check the thermostat wiring and thermostat.
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