Idea ISW-10 SF1-DN1, Installation Manual

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Er 66 DC motor 2 fault
1. The DC fan wire is damaged;
2. The DC fan is jammed and blocked;
3. The main board is damaged;
1. Check whether the DC fan wiring is correct
and whether it is broken;
2. Check whether the DC fan blades are stuck
and whether it can rotate normally, otherwise
change the fan;
3. Change the main board;
Er 67
Low pressure
sensor fault
1. The low pressure switch is damaged.
2. Insufficient refrigerant.
3. The evaporator is blocked or the fin
surface is dirty.
1 Replace the low pressure switch. .
2. Increase refrigerant.
3. Clean the evaporator.
Er 68
High pressure
sensor fault
1. The system is blocked
2. Sensor failure
3. Insufficient water flow
1. Check the system and troubleshoot.
2. Replace the sensor.
3. Check the waterway and increase the water
flow
Er 69
Low pressure
protection . The temperature sensor probe is faulty
2. Insufficient refrigeration system 1. Replace the temperature sensor
2. Increase the refrigeration system
Er 70
High pressure
protection 1. The system is blocked;
2. The compressor is worn out;
1. Leak detection and repair of the system and
charge refrigerant according to the parameters.
2. Check the system and troubleshoot.
◎
E20 fault will display the following fault serial numbers at the same time, and switch the fault code every 3
seconds; among them, faults 1~128 are displayed first.
No. 257~384 will be displayed when there are no 1~128 faults. If two or more faults of the same priority occur at
the same time, it will show serial number accumulation. For example, if the 16th and 32nd faults occur at the
same time, 48 will be displayed.
Code
serial No
Name Description Handling suggestion
1 IPM over current IPM module problem Replace the inverter module
2 Abnormal compressor
synchronization Compressor fault Replace the compressor
4 Standby -- --
8 Compressor output lack
phase Poor connection of compressor wiring Check the compressor input
wire