Rheem
Cap
ProtectDual run capacitor
HERM and/or FAN section out of rating. Single-stage Comfort dies this way all summer.
Walk Cap in Diagnose
4 plates — walk the one on the cabinet
First check
1 Is Y actually at the contactor?
On Rheem RA14AZ a silent outdoor is often no Y. Measure 24 VAC coil-to-C at the contactor on a cool call. Both sections vs microfarad rating, not just one.
Expect: ~24 VAC at the coil when the indoor is calling.
If fail: Indoor Y / IFC / stat — not a capacitor.
The rest of the walkthrough is Diagnose.
On the plates
- Both sections vs microfarad rating, not just one.
- Bulged can, open bleed, wrong replacement (single vs dual, voltage).
- Hard-start add-ons do not fix a dead FAN section.
Plates that use Cap
Same number, other makers
Cap on Rheem is not the same code on these plates.