When blower failed to run in "Fan Auto" or "Fan On" modes, I replaced the blower relay, and the AC ran normally for one month and then the relay failed again. I replaced the blower relay again, and the AC ran normally for two more months but failed again. What could be causing the blower relay to continue to fail?
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Heil Condensing Upflow Gas Furnace Model NUGK075AG02
Started by Fixitman2, Aug 15 2011 10:04 PM
3 replies to this topic
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#2
RegUS_PatOff
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Posted 16 August 2011 - 04:14 AM
How is it failing ?
Relay Contacts "burned" ?
Relay Coil "open" ?
Relay Contacts "burned" ?
Relay Coil "open" ?
.
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RegUS_PatOff > www.youtube.com/watch?v=oPAY2LsKVEw
one of my video productions: “Easter Seals: Walk With Me”
every day is Down Syndrome Awareness Day
"A Child Is Waiting" . Burt Lancaster . Judy Garland . 1962
RegUS_PatOff > www.youtube.com/watch?v=oPAY2LsKVEw
#3
ACtechGUY
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Posted 16 August 2011 - 06:17 AM
The correct relay is one rated for 12 amps at full load(FLA). Assuming you are using the right part , there is one reason for failure.
Relay
PART NUMBER: 90-340
Failing blower motor or failed capacitor . The motor is drawing more than the rated amps on the relay.
Relay
PART NUMBER: 90-340
Failing blower motor or failed capacitor . The motor is drawing more than the rated amps on the relay.
#4
Dan Webster
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Posted 16 August 2011 - 10:43 AM
What relay are you using?
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