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Mitsubishi Electric PURY-RP200 Service Handbook page 219

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[ IX Troubleshooting ]
1. Error Code
7110
Connection information signal transmission/reception error
2. Error definition and error detection method
The given indoor unit is inoperable because it is not properly connected to the outdoor unit in the same system.
3. Error source, cause, check method and remedy
Error source
Outdoor unit
(1)
(2)
(3)
(4)
(5)
1. Error Code
7111
Remote controller sensor fault
2. Error definition and error detection method
This error occurs when the temperature data is not sent although the remote controller sensor is specified.
3. Error source, cause, check method and remedy
Error source
Indoor unit
OA process-
ing unit
HWE10020
Cause
Power to the transmission booster is cut off.
Power resetting of the transmission booster
and outdoor unit.
Wiring failure between OC and OS
Broken wire between OC and OS.
The model selection switch (SW5-7) on the
outdoor unit is set to OFF. (Normally set to
ON)
Cause
The remote controller without the temperature
sensor (the wireless remote controller or the
ME compact remote controller (mounted
type)) is used and the remote controller sen-
sor for the indoor unit is specified. (SW1-1 is
ON.)
Check method and remedy
1)
Confirm that the power to the transmission
booster is not cut off by the booster being
connected to the switch on the indoor unit.
(The unit will not function properly unless the
transmission booster is turned on.)
->Reset the power to the outdoor unit.
2)
Confirm that the TB3 on the OC and OS are
properly connected.
3)
Check the model selection switch on the out-
door unit (Dipswitch SW5-7 on the control
board.).
Check method and remedy
Replace the remote controller with the one
with built-in temperature sensor.
- 210 -
GB
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