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Mitsubishi Electric PURY-P72 Service Handbook page 258

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[ IX Troubleshooting ]
1. Error Code
7101
Capacity code setting error
2. Error definition and error detection method
Connection of incompatible (wrong capacity code) indoor unit or outdoor unit
3. Error source, cause, check method and remedy
Error source
Outdoor unit
(1)
The model name (capacity code) set by
Indoor unit
the switch (SW2) is wrong.
*The capacity of the indoor unit can be
confirmed by the self-diagnosis function
(SW1 operation) of the outdoor unit.
Outdoor unit
(2)
The model selection switches (SW5-1 -
5-4) on the outdoor unit are set incor-
rectly.
HWE0803A
Cause
SW5
Model
1
2
3
4
72 model
OFF ON OFF OFF
96 model
ON
ON OFF OFF
120 model
OFF OFF ON
OFF
- 249 -
Check method and remedy
1)
Check the model name (capacity code) of the in-
door unit which has the error source address set by
the switch (SW2 on indoor unit board).
When the model name set by the switch is different
from that of the unit connected, turn off the power
source of the outdoor and the indoor units, and
change the setting of the capacity code.
Check the setting for the model selection switch on
the outdoor unit (Dipswitches SW5-1 - 5-4 on the
outdoor unit control board).
GB
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