I have moved this house and the a/c was working before. I have rewired the condenser unit and the heat isn't working.
I have checked power and know the fan works, the a/c works but I think the sequencer isn't working. There is 244 v to the top of the sequencers but nothing out the bottom.
I removed the heater coils and checked them completly. They aren't broken and the switches are passing current fine.
Is there a way to test a sequencer?
I would hate to spend the money to replace and it be something else?
Thanks in advance.
Coleman 3400-815 Sequencer Problem
Set t-stat to Heat/Auto/85* for call for heat: Wait 2 minutes.
Bottom brass terminals:
H1 and H/2 = 24-28VAC
H3 and H/4 = 24-28VAC
H5 and H6 (if applicable) = 24-28VAC
Top and Middle Silver terminals:
M1 and M2 = 0VAC
M3 and M4 = 0VAC
M5 and M6 = 0VAC
IF you are not getting 24-28VAC at H terminals, check t-stat and wiring to sequencer from t-stat.
IF you are getting the 24-28VAC at H terminals, then you SHOULD get 0VAC across M terminals.
IF you have 24-28VAC at H's and 240VAC at M's, sequencer is bad.
Thanks,
Robert
Bottom brass terminals:
H1 and H/2 = 24-28VAC
H3 and H/4 = 24-28VAC
H5 and H6 (if applicable) = 24-28VAC
Top and Middle Silver terminals:
M1 and M2 = 0VAC
M3 and M4 = 0VAC
M5 and M6 = 0VAC
IF you are not getting 24-28VAC at H terminals, check t-stat and wiring to sequencer from t-stat.
IF you are getting the 24-28VAC at H terminals, then you SHOULD get 0VAC across M terminals.
IF you have 24-28VAC at H's and 240VAC at M's, sequencer is bad.
Thanks,
Robert
Some people are Humbly Grateful, while some are Grumbly Hateful.................... Which one are you ?
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