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Self-Diagnosis - Mitsubishi Electric PEH-P8YE Technical & Service Manual

Air-cooled heat pump type packaged air conditioners, indoor unit
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2 Test run start and finish
• Operation from the indoor unit
Execute the test run using the installation manual for the indoor unit.
• Operation from the outdoor unit
Execute settings for test run start, finish and operation mode (cooling, heating) using the DIP switch SW 4 on the outdoor
substrate.
<SW4>
OFF
ON
A
C
1
B
D
2
1 Set the operation mode (cooling, heating) using SW 4-2
2 Turn ON SW 4-1, The operation mode for SW 4-2 will be adhered to, and the test run will commence
3 Turn OFF SW 4-1 to finish the test run
• There may be a faint knocking noise emitted from the proximity of the fan during the test run. This is torque fluctuation
occurring due to control of fan revolutions. There is no problem with the product.
Note:
The SW 4-2 operation mode cannot be changed during the test run. (To change test run mode, stop the equipment with SW
4-1, change the operation mode, then restart test run with SW 4-1.)

[3] Self-diagnosis

Use the remote controller to look up each units error history.
1
ON OFF
CHECK
CLOCK
˚C
STAND BY
INDOOR UNIT
DEFROST
ADDRESS NO
2
ON OFF
CHECK
CLOCK
˚C
STAND BY
INDOOR UNIT
DEFROST
ADDRESS NO
3
(1)
ON OFF
CHECK
CLOCK
˚C
STAND BY
INDOOR UNIT
ERROR CODE
DEFROST
ADDRESS NO
b)
ON OFF
CHECK
CLOCK
˚C
STAND BY
INDOOR UNIT
DEFROST
ADDRESS NO
d)
(2)
ON OFF
CHECK
CLOCK
˚C
STAND BY
INDOOR UNIT
ERROR CODE
DEFROST
ADDRESS NO
A Stop
B Cooling
C Operation
D Heating
1Hr.
˚C
FILTER
CHECK MODE
FUNCTION
1Hr.
˚C
FILTER
CHECK MODE
FUNCTION
1Hr.
˚C
FILTER
CHECK MODE
FUNCTION
c)
a)
1Hr.
˚C
FILTER
CHECK MODE
FUNCTION
1Hr.
˚C
FILTER
CHECK MODE
FUNCTION
1 Change to self-diagnosis mode
Press the CHECK button twice within three seconds to show the
following display.
2 Select the refrigerant address number to be self-diagnosed
Press the
buttons to scroll through the refrigerant ad-
dress numbers (00 to 15) and select the refrigerant address num-
ber to be self-diagnosed. After three seconds from making the
change, the lit refrigerant address to be self-diagnosed will start to
flash, and self-diagnosis will commence.
3 Self-diagnosis result display
See the above chart for details of error code contents.
(1) When there is an error history
a) Alternating display
b) Error code
c) Attribute of error search
d) Unit number
(2) When there is no error history
–23–

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