Error code
Mitsubishi Electric PUY code U4
No approved translation for this record yet; showing the original text.
Meaning
WCheck which unit has abnormality in its thermistor by switching the mode of SW2. (PAC-SK52ST) (Refer to 11-10.) Thermistors Symbol Name Thermistor <Outdoor TH3 Thermistor <Outdoor 2-phase TH6 TH7 Thermistor <Outd
Member details
Signed-in members see the LED pattern and how to read the code with the remote control on eligible records.
View details as a memberPossible causes
(1) Disconnection or contact failure ) ( of connectors Outdoor controller circuit board: TH3,TH6/TH7 Outdoor power circuit board: CN3 (2) Defective thermistor (3) Defective outdoor controller circuit board Open detection pipe> – 40:[-40˚F] or pipe> – 40:[-40˚F] or – 40:[-40˚F] or – 27:[-17˚F] or
Solution
Solution steps are not shared for faults that may be dangerous.
No do-it-yourself solution is given for this fault. For your safety, call an authorised service.
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