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11. Test run
11.1. Test run
The test run can be carried out either from the outdoor unit or the indoor unit.
For the test run from indoor unit, please check the indoor unit installation manual.
1. Checklist
•
After the installation, piping setup, and wiring of the indoor and outdoor units is
complete, check that refrigerant is not leaking, the power and control wires are
not loose, and the poles are not reversed.
•
Use a 500 V insulation resistance tester to make sure that the resistance be-
tween the power terminal and the ground is 1.0 M or more . If it is less than
1.0 M , do not oper ate the unit. * Absolutely do not touch the tester to indoor/
outdoor connection terminals S1, S2, and S3. An accident could occur.
•
Make sure there is no malfunction in the outdoor unit. (If there is a malfunction,
you can diagnose it using LED1 on the board.)
Check that the ball valve is fully open on both the liquid and gas ends.
•
•
Check to make sure that L
, L
, and L
1
2
order. Connecting them in the reverse order will trip the negative-phase pro-
tector, and the unit will come to a stop, displaying the Error code F1.
•
Starting at least 12 hours before the test run, send current through the
crankcase heater. (If the current is running for a shorter period of time,
damage to the compressor could result.)
After the above checks are complete, carry out the test run as indicated in the
following outline.
11.2. How to handle problems with the test run
Error code list: details
Remote controller
MELANS display
display
E0
6831,6834
E1, E2
6201,6202
E3
6832,6833
E4
6831,6834
E5
6832,6833
E6
6740,6843
E7
6841,6842
E8
6840,6843
E9
6841,6842
EA
6844
EB
6845
EC
6846
ED
0403
EE
0403
F1
4103
F8
4115
A0
6600
A2
6602
A3
6603
A6
6606
A7
6607
A8
6608
EF
undefined
U2
1102
U2
1108
U3
5104
U4
5105
U6
4101
UE
1302
UL
1300
F8
4115
P1
5101
P2
5102
P4
2503
P5
2502
P5
2500
P6
1503
P6
1504
P8
1110
P9
5103
14
are connected in the correct phase
3
Remote controller communication – reception error
Remote controller board 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 thermistor
Compressor overcurrent interruption (51C operation)
High pressure error (63H1 operation)
Low pressure error (63L operation)
Power synchronous idle circuit error
Return air temperature sensor error
Pipe (TH2) sensor error
Drain sensor error/Float switch connector open
Drain pump error
Water leak error (PDH only)
Freeze prevention operation
Surge prevention operation
Pipe temperature error/Outdoor unit error
Open/short in condenser/evaporater temp thermistor
2. Starting and finishing the test run
•
Procedure from the outdoor unit: start and stop the test run and set test run
mode (cooling/heating) using the SW4 dip switches on the board.
1 Set test run mode (cooling/heating) using SW 4-2.
2 The test run will begin when SW 4-1 is turned ON, according to the mode
selected by SW 4-2.
3 The test run is stopped when SW 4-1 is turned OFF.
1
2
Note:
Test run mode cannot be stopped during operation by using SW 4-2. (If the
operation mode is to be changed, first stop it using SW 4-1, then after chang-
ing the operation mode, start the test run again using SW 4-1.)
If the 2-hour timer is set, the test run will stop automatically after 2 hours.
•
•
During the test run, the room temperature display on the indoor unit will indi-
cate the temperature of the indoor unit piping.
•
When you operate the test run from OC1, all trial runs are completed by OC1
→ IC1 → MA → IC1 → OC2.
(IC1)
PEH-16, 20
MA
OC1
OC2
Error details
OFF
ON
Problem location
Remote Controller
Remote Controller
Remote Controller
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
M-NET board
Outdoor unit
Outdoor unit
M-NET board
M-NET board
M-NET board
M-NET board
M-NET board
M-NET board
–
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
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