Panasonic U-26PE1U6 Technical Data & Service Manual page 254

HIC-CH4872R
(Type 42)
(3) [Alarm "E31"]
4
(communications
trouble within unit)
Between terminals
HIC + HIC –
HIC + U
HIC + V
HIC +
W
HIC –
U
HIC –
V
HIC –
W
IGBT short-circuit protection
Is "E31"
No
displayed even after
the power voltage
is reset?
Yes
Replace outdoor unit
control PCB.
HIC-CH2672R
(Type 26, 36)
Resistance
Resistance
200 kΩ or more
300 kΩ or more
300 kΩ or more
300 kΩ or more
200 kΩ or more
200 kΩ or more
200 kΩ or more
4-10
4. Service procedures
Normal