Mitsubishi Electric PURY-HP144, Service Handbook

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[7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ]
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- chapter 7 HWE18220_GB
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7-9-2 Error Code [7101]
1. Error code definition
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 Cause Check method and remedy
Outdoor unit
Indoor unit (1) The model name (capacity code) set by the
switch (SW2) is wrong. 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 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 capacity code.
*The capacity of the indoor unit can be con-
firmed by the self-diagnosis function (SW1
operation) of the outdoor unit.
Outdoor unit (2) The model selection switches (SW5-3 - 5-8)
on the outdoor unit are set incorrectly. Check the setting for the model selection switch
on the outdoor unit (Dipswitches SW5-3 - 5-8 on
the outdoor unit control board).
72 model
96 model
120 model
144 model
168 model
Model
SW5
OFF ON OFF OFF
ON ON OFF OFF
OFF OFF ON OFF
ON ON ON OFF
OFF OFF OFF ON
OFF
OFF
OFF
OFF
OFF
3 4 5 6
ON
ON
ON
ON
ON
7 8