Sharp AE-X4M30PU Service Manual page 24

AE-X4M30PU
3) When all rooms are not heated
The heating cycle is normal.
Pressure check
Does the air get cooler in the
cooling operation mode?
No
Refer to 1 All rooms are
not cooled.
Yes Check the four-way valve.
Has the cycle been switched?
No
Is AC230V applied between
the connector(CN4) 1 and 3
of the 4-way valve ?
24
Yes
Press the ON switch on the remote
control to run the air conditioner.
Set the temperature to 86ºF(30ºC)
in the heating mode and start
operation.
No
Yes
Is the outdoor compressor running?
No
A
T o
Yes
Replace the 4-way valve.