Mitsubishi Electric Mr.Slim PUZ-HA42NKA Service Manual page 34

Check Code
Abnormal point and detection method
Pipe temperature
[
Abnormal refrigerant circuit
:
These detected errors will not be
cancelled until the power source is
reset.
OCH567
1
-
-
2
:
3
4
5
-
: [
1
2
3
4
5
Case
1–4
-
-
-
-
-
Temperature display of indoor liquid pipe
Indoor 1
1 2 3
Temperature display of indoor liquid pipe
Indoor 2
1 2 3
-
23
1 When this error occurs, be sure to
replace the 4-way valve.
2
3
4
5
To avoid entry of moisture or air into
refrigerant circuit which could cause
abnormal high pressure, purge air in
refrigerant circuit or replace refrigerant.
Judgment and action
Temperature display of indoor condenser/
evaporator pipe Indoor 1
3
4 5 6 1 2 4 5 6
ON
OFF
Temperature display of indoor condenser/
evaporator pipe Indoor 2
4 5 6 1 2 3 4 5 6
ON
OFF
A-Control Service Tool SW2 setting
-
ON
OFF
ON
OFF