Mitsubishi Electric PUHY-M200YNW-A1 Service Handbook page 247

[7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ]
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 model or capacity code) outdoor units, indoor units, or hydro units.
3. Error source, cause, check method and remedy
Error source
Indoor unit (1) The model name (capacity code) set by the
switch (SW2) is wrong.
*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.
*1 ON: EM model; OFF: M model
Hydro unit (3) The model name (capacity code) setting is
wrong.
Correct combinations of outdoor units and
hydro units
84
- chapter 7
Cause
SW5
Model
3 4 5 6
M200 model OFF ON OFF OFF
M250 model
ON ON OFF OFF
M300 model
OFF OFF ON OFF
M350 model
OFF ON ON OFF
M400 model
ON ON ON OFF
M450 model OFF OFF OFF ON
M500 model
ON OFF OFF ON
Outdoor unit Hydro unit
M200 model WM250 model
M250 model
M300 model WM350 model
M350 model
M400 model WM500 model
M450 model
M500 model
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 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.
Check the setting for the model selection switch
on the outdoor unit (Dipswitches SW5-3 - 5-8 on
the outdoor unit control board).
7 8
ON
ON
ON
ON *1
ON
ON
ON
Check the setting for the model selection switch
on the outdoor unit (Dipswitches SW5-3 - 5-8 on
the outdoor unit control board).
BS_07_E