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Gree PL fault code

Gree air conditioning

What the Gree PL fault code means, from the manufacturer's own service literature, and the UK models it applies to.

What it means

DC bus bar low-voltage protection

DC link voltage dropped below the safe operating window.

Safety: Safe isolation, then TREAT THE DC LINK AS LIVE. The electrolytic capacitors hold a lethal charge after the supply is off. Discharge through a resistor across the + and − terminals (Gree specifies approx. 100 Ω 20 W) and confirm with a meter on DC before touching the board. Never short the terminals with a screwdriver.

Source: Gree (Zhuhai) Service Manual, Bora Inverter R32 §9.1 Error Code List

UK models this code applies to

Tap yours to open PL on that machine.

PL on these comes from each model's own manual, which may not match the meaning above — tap yours to read it.

Wall-mounted4
Cassettes8
Ducted16
Ceiling or floor8
Floor consoles3
Indoor and outdoor pairs3
Outdoor units4

Now the harder half: proving what caused it

PL names a symptom, not a root cause. In the app, the same code opens a guided investigation: what to measure first, the expected values for your exact model, and an honest verdict — including “nothing in this machine is broken” when that's what the readings say.

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