Mitsubishi Electric PUHY-P200 Service Handbook page 259

[ IX Troubleshooting ]
7100
1. Error Code
7100
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)
(2)
(3)
HWE10040
Cause
The model total of indoor units in the sys-
tem with one outdoor unit exceeds the fol-
lowing table.
Model Qj Total
200 model 53
69
250 model
300 model 86
350 model 96
400 model 108
450 model 121
500 model 138
550 model 155
172
600 model
650 model 177
700 model 190
750 model 207
800 model 224
850 model 241
900 model 258
254
950 model
1000 model 270
1050 model 284
1100 model 296
1150 model 312
1200 model 324
1250 model 338
The model selection switches (SW5-1 - 5-
4) on the outdoor unit are set incorrectly.
SW5
Model
1 2
200 model
OFF ON OFF
250 model
ON ON OFF
300 model
OFF OFF ON
350 model
OFF ON ON
400 model
ON ON ON
450 model OFF OFF OFF
The outdoor unit and the auxiliary unit
(OS) that is connected to the same system
are not properly connected.
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).
3) Indoor unit Qj table
Check the setting for the model selection switch
on the outdoor unit (Dipswitches SW5-1 - 5-4 on
the outdoor unit control board).
3 4
OFF
OFF
OFF
OFF
OFF
ON
Confirm that the TB3 on the OC and OS are
properly connected.
- 250 -
Check method and remedy
Model Qj
15 3
20 4
25 5
32 6
40 8
50 10
63 13
71 14
80 16
100 20
125 25
140 28
200 40
250 50
GB