Mitsubishi Electric City Multi CMH-WM250V-A, Service Handbook

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[7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ]
BS_07_E chapter 7 -
83
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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 Cause Check method and remedy
Outdoor unit (1) The model total of indoor units in the system with
one outdoor unit exceeds the following table.
1) Check the Qj total (capacity code total) of in-
door units connected.
2) Check the Qj setting (capacity code) of the
connected indoor unit set by the switch (SW2
on indoor unit board).
When the model name set by the switch is dif-
ferent 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 (capac-
ity code).
3) Indoor unit Qj table
(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).
Qj Total Model
200 model
250 model
300 model
350 model
400 model
450 model
500 model
53
69
86
96
108
121
138
10
15
20
25
32
40
50
63
71
80
100
125
140
200
250
2
3
4
5
6
8
10
13
14
16
20
25
28
40
50
Model Qj
M200 model
M250 model
M300 model
M350 model
M400 model
M450 model
M500 model
Model
SW5
*1 ON: EM model; OFF: M model
OFF ON OFF OFF
ON ON OFF OFF
OFF OFF ON OFF
OFF ON ON OFF
ON ON ON OFF
OFF OFF OFF ON
3 4 5 6
ON
ON
ON
ON
ON
ON
*1
ON OFF OFF ON ON
7 8
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