The fan in the inside unit of our Coleman unit continuously runs unless the breaker is turned off. The first step was to replace the t-stat, which had no results. The fan on the inside unit runs regardless of the settings on the t-stat (even when the fan is switched to off). The outside unit runs fine, comes on and off when it should, but not the inside unit.
Therefore, I am planning on in this order:
Replacing the fan relay switch (3110-3301)
Replacing the Sequencer if that doesn't work.
Is there anything else I should consider? Any testing I should do before replacing any parts?
Thanks!
Coleman EB17B Fan Countinuously Runs
That would be a logical choice. The fan relay can stick closed causing this problem.
The heat sequencer would be my next choice part number 3115-3571
The heat sequencer would be my next choice part number 3115-3571
God, grant me the serenity
to accept the things I cannot change;
the courage to change the things I can;
and the wisdom to know the difference.
to accept the things I cannot change;
the courage to change the things I can;
and the wisdom to know the difference.
Hi Scott,
Turn t-stat OFF and with unit running continously, follow these steps:
Set meter to test for 300+ vac and test these at blower relay:
Terminals 2 and 4, test across, one lead on each = ???
Terminals 5 and 6 = ???
Then set meter to test for 30+ vac and test here:
Blower Relay 1 and 3, test across those also.
THEN, go to Sequencer and leave meter to test for 30+vac and test here:
H1 and H2, test across those 2.
Set meter back to test for 300+vac and test here:
M1 and M2, test across those 2.
This will identify faulty part and save $$$ from buying unneeded parts.
Take care and best wishes,
Robert
Turn t-stat OFF and with unit running continously, follow these steps:
Set meter to test for 300+ vac and test these at blower relay:
Terminals 2 and 4, test across, one lead on each = ???
Terminals 5 and 6 = ???
Then set meter to test for 30+ vac and test here:
Blower Relay 1 and 3, test across those also.
THEN, go to Sequencer and leave meter to test for 30+vac and test here:
H1 and H2, test across those 2.
Set meter back to test for 300+vac and test here:
M1 and M2, test across those 2.
This will identify faulty part and save $$$ from buying unneeded parts.
Take care and best wishes,
Robert
Some people are Humbly Grateful, while some are Grumbly Hateful.................... Which one are you ?
hvac1000 and Robert. Thank you both very much for your replies. I will do the testing you suggested on Saturday and reply with the results. This unit is actually my mother in law's and I will be there Saturday to actually do the work.
Thanks a ton guys...this is a great service you provide here.
Thanks a ton guys...this is a great service you provide here.
Hi,
You're very welcome. Glad to help, let us know what you find and we'll help all we can.
Take care and best wishes,
Robert
You're very welcome. Glad to help, let us know what you find and we'll help all we can.
Take care and best wishes,
Robert
Some people are Humbly Grateful, while some are Grumbly Hateful.................... Which one are you ?
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