The short answer for this line
A warm PFQZ unit is a sequence rather than a single fault. A hum or a click every few minutes with no sustained run is a start problem, and it is recognisable by rhythm alone, which is why the ranking below departs from the brand-generic order. The order below puts a start component that has failed first and a loss of refrigerant charge last, and that order is the point of the page.
What this looks like on these models
- The compressor runs constantly and the cabinet stays warm — Never reaches temperature, never stops trying, and the machinery end is hot to the touch.
- It runs for a few minutes, stops, and starts again — The same short cycle repeated all day, with the cabinet never coming down.
- Cold at the plate, warm at the far end of the cabinet — Cooling is being made but not distributed, which points at air rather than at the system.
- NEAR MISS - cold but leaking water — A cabinet that holds temperature and leaves puddles is a drainage fault, and the water leak page for this line covers it.
Causes in likelihood order on this platform
- A start component that has failed — Ranked first on this line: a compressor that cannot start hums for a moment and then drops out on its protector, over and over. The cause is usually the start device rather than the compressor itself, but confirming that is not owner work.
- A marginal supply or lead — Next, and close behind: a compressor draws its heaviest current at the moment it starts, and a supply that sags under that load leaves the unit clicking or running without ever pulling down. The cabinet stays warm while everything looks alive.
- The condenser unable to shed heat — Then: this is the fault that arrives with the summer: the same clearance that coped in spring is not enough when the room is warm, and the unit crosses from just coping to not coping.
- A loss of refrigerant charge — Last, and the reason the order matters: a system that has lost its charge runs continuously, stays quiet, and produces little or no cold at the plate. It is the least likely cause and the only one that decides whether the unit is worth keeping.
Check in this order, and why
- Listen for repeated failed starts — Confirm the supply first, because a weak supply produces the same pattern and costs nothing to rule out.
- Prove the supply before anything else — Run the unit from a different socket on a different circuit, using its own lead and no adaptor. A unit that cools normally there had a supply problem, not a fault.
- Give the condenser air and a clean grille — Feel the machinery end while it runs: it should be warm. A unit running continuously with a cool condenser has a different problem from one running continuously with a hot one.
Safety first
Safety
Isolate the unit at the plug or the breaker before any panel comes off, because a capacitor can hold a charge after the power is off. If you find oil or a greasy film at the machinery end, stop: that means the sealed system is open and the unit should not be run.
The line between a fix and a call
Call when the unit clicks or hums every few minutes without a sustained run and a different socket has already been ruled out, and call at once for a burning smell or a trip. Both patterns point past the owner checks.
The rest of this line
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
