Error Code Definitions And Solutions: Codes [7000 - 7999]; Error Code [7100] - Mitsubishi Electric HP120TNU-A Service Handbook

[7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ]

7-9

Error Code Definitions and Solutions: Codes [7000 - 7999]

7-9-1

Error Code [7100]

1. Error code definition
Total capacity error
2. Error definition and error detection method
The model total of indoor units in the system with one outdoor unit exceeds limitations.
3. Error source, cause, check method and remedy,
Error source
Outdoor unit (1) The Qj total of indoor units in the system with
one outdoor unit exceeds the following table.
(2) The model selection switches (SW5-3 - 5-8) on
the outdoor unit are set incorrectly.
Model
72 model
96 model
120 model
144 model
168 model
(3) The outdoor unit and the auxiliary unit (OS) that
is connected to the same system are not prop-
erly connected.
HWE18220_GB
Cause
Model Capacity total
72 model 108
96 model 144
120 model 180
144 model 216
168 model 252
192 model
288
216 model
324
240 model
360
264 model
396
288 model
432
312 model
468
336 model
504
SW5
3 4 5 6 7
OFF ON OFF OFF ON
ON ON OFF OFF ON
OFF OFF ON OFF ON
ON ON ON OFF ON
OFF OFF OFF ON ON
Check method and remedy
1) Check the Qj total (capacity code total) of indoor
units connected.
2) Check the Qj setting (capacity code) of the con-
nected indoor unit set by the switch (SW2 on in-
door unit board).
When the model name set by the switch is differ-
ent from that of the unit connected, turn off the
power source of the outdoor and the indoor units,
and change the setting of the Qj (capacity code).
Check the setting for the model selection switch
on the outdoor unit (Dipswitches SW5-3 - 5-8 on
the outdoor unit control board).
8
OFF
OFF
OFF
OFF
OFF
Confirm that the TB3 on the OC and OS are
properly connected.
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