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Heil Condensing Upflow Gas Furnace Model NUGK075AG02

sperhaam

By sperhaam
in DIY Appliance Repair Help

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sperhaam

sperhaam

Posted
Posted

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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RegUS_PatOff Sensei

RegUS_PatOff

Posted
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How is it failing ?

Relay Contacts "burned" ?

Relay Coil "open" ?

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ACtechGUY Kohai

ACtechGUY

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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.

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