Midea MRC-36CWN1-V10, Руководство пользователя

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R410A Rooftop Package Unit 60Hz MCAC-RTSM-2014-03
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17. Error Code
No. Code LED1(Red) LED2(Yellow) LED3(Green)
1 Standby OFF OFF ON
2 Function ON ON ON
3 Lack of phase Flash Flash Flash
4 Phase-error Flash Flash OFF
5
T3 sensor failure
OFF Flash Flash High pressure protection
Vent protection
6 T2 sensor failure Flash OFF Flash
7 T2 Evaporator low temp, protection OFF Flash OFF
8 T3 Condenser high temp, protection Flash OFF OFF
9 Wired controller input failure Flash Flash ON
10 Compressor current protection OFF OFF Flash
11 Compressor-inhaling low pressure protection Flash ON Flash
1. Indoor fan failure
Check whether the power supply is normal, each wired port is fastened , the setting and wiring of the wired
controller is right.
Confirm the above and check as the following step.
Yes no
Yes no
no
no
Check the PCB, whether there is
208/230 voltage between CN9 and L1.
Cut off the power supply and check
whether the fan capacitor is normal .
Replace the PCB.
yes
no
Check the PCB, whether there is 24V voltage
between G and C.
Check whether the fuse on the
PCB has fused.
yes
Replace the motor.
Replace the motor capacitor.
yes
Replace fuse.
Check whether the
transformer is normal
and the secondary has
24v.
Check the wired
controller and wring.
Replace
transforme r.