Error Code Definitions And Solutions: Codes [7000 - 7999]; Error Code [7100] - Mitsubishi Electric PUHY-HP72 Service Handbook

[7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ]

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
Outdoor unit (1) The model total of indoor units in the system with
one outdoor unit exceeds the following table.
(2) The model selection switches (SW5-3 - 5-8) on
the outdoor unit are set incorrectly.
120 model
(3) The outdoor unit and the auxiliary unit (OS) that
is connected to the same system are not proper-
ly connected.
66
- chapter 7
Cause
Capacity total
Model
72 model 93
96 model 124
120 model 156
144 model 187
192 model 249
240 model 312
Model SW5
3 4 5 6
72 model OFF ON OFF OFF
96 model
ON ON OFF OFF
OFF OFF ON OFF
Check method and remedy
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).
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
OFF
ON
ON
Confirm that the TB3 on the OC and OS are
properly connected.
HWE18240_GB