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12.3. Test run method
[Fig. 12.3.1] (P.10)
1 Turn on the power to the unit at least 12 hours before the test run.
TEST RUN
2 Press the
button twice continuously.
(Start this operation from the status of remote controller display turned
off.)
A
TEST RUN and current operation mode are displayed.
MODE
3 Press the
button to activate
whether cool air is blown out from the unit.
MODE
4 Press the
whether warm air is blown out from the unit.
13. Troubleshooting
13.1. How to handle problems with the test run
Error code list: details
Remote controller communication – reception error
Remote controller communication – transmission error
Remote controller communication – reception error
Remote controller communication – transmission error
Communication between indoor and outdoor units – reception error
Communication between indoor and outdoor units – transmission error
Communication between indoor and outdoor units – reception error
Communication between indoor and outdoor units – transmission error
Indoor/outdoor connection wiring error, indoor unit overload (5 units or more)
Indoor/outdoor connection wiring error (interference, loose)
Excessive time in use
Serial communication error
Serial communication error
Reverse phase, out of phase verification
Faulty input circuit
Duplicated M-NET address setting
M-NET error in PH/W transmission
M-NET bus busy
M-NET communication error with P transmission
M-NET error – no ACK
M-NET error- no response
Undefined error code
Outlet temperature error
CN23 Short-circuit Connector Unplugged
Open/short in discharge temp thermistor
Open/short in liquid temp or condenser/evaporater temp thermistor
Compressor overcurrent interruption (51C operation)
High pressure error (63H1 operation)
Low pressure error (63L operation)
Power synchronous idle circuit error
Inlet sensor error
Piping sensor error
Drain sensor error
Drain overflow protector operation
Water leak error (PDH only)
Freeze prevention operation
Surge prevention operation
Piping temperature error
22
mode, then check
COOL
button to activate
mode, then check
HEAT
Error details
FAN
5 Press the
button and check whether fan speed changes.
VANE
6 Press the
button and check whether the auto vane operates prop-
erly.
7 Press the ON/OFF button to stop the test run.
Note:
•
Point the remote controller towards the indoor unit receiver while follow-
ing steps 2 to 7.
•
It is not possible to run in FAN, DRY or AUTO mode.
Problem location
MELANS display
Remote Controller
6831,6834
Remote Controller
6832,6833
Indoor unit
6831,6834
Indoor unit
6832,6833
Indoor unit
6740,6843
Indoor unit
6841,6842
Outdoor unit
6840,6843
Outdoor unit
6841,6842
Outdoor unit
6844
Outdoor unit
6845
Outdoor unit
6846
Outdoor unit
0403
M-NET board
0403
Outdoor unit
4103
Outdoor unit
4115
M-NET board
6600
M-NET board
6602
M-NET board
6603
M-NET board
6606
M-NET board
6607
M-NET board
6608
–
undefined
Outdoor unit
1102
Outdoor unit
1108
Outdoor unit
5104
Outdoor unit
5105
Outdoor unit
4101
Outdoor unit
1302
Outdoor unit
1300
Outdoor unit
4115
Indoor unit
5101
Indoor unit
5102
Indoor unit
2503
Indoor unit
2502
Indoor unit
2500
Indoor unit
1503
Indoor unit
1504
Indoor unit
1110
Remote controller
display
E0
E3
E4
E5
E6
E7
E8
E9
EA
EB
EC
ED
EE
F1
F8
A0
A2
A3
A6
A7
A8
EF
U2
U2
U3
U4
U6
UE
UL
F8
P1
P2
P4
P5
P5
P6
P6
P8
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