Idea ISW-10 SF1-DN1, Installation Manual

Page: 47 / 66

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Er 05
High pressure
fault
1. The external machine is dirty and blocked,
affecting heat exchange;
2. The heat exchanger is dirty and blocked,
which affects heat exchange;
3. The interface between the sensor and the
motherboard is loose or falls off;
4. The sensor probe falls off;
5. The sensor connection line is open or
short-circuited;
6. The sensor is damaged;
1. Clean the external coil
2. Clean or replace the heat exchanger.
3. Check and reinforce the interface between
the sensor and the motherboard;
4. Re-fix the sensor probe;
5. Repair the sensor connection line;
6. Replace the sensor;
Er 06
Low pressure
fault
1. Insufficient refrigerant;
2. The evaporator is blocked or the fin
surface is dirty;
3. The low pressure switch is broken;
1,Inject the refrigerant .
2,Clean evaporator .
3,Change the low pressure switch .
Er 09
Communication
fault
1. The communication wiring between the
compressor drive and the main control
board is loose;
2. The communication wiring between the
compressor drive and the main control
board is broken;
3. The connection position of the drive end
or the main control end is incorrectly
selected;
4. The compressor drive is damaged and not
powered on.
1. Check whether the connection position of the
communication line at both ends of the driver
and the main control is correct;
2. Check whether the communication wiring is
broken or loose, if so, replace the
communication line;
3. Check whether the compressor drive is
normally powered on; (the LED flashes when
the compressor drive is working normally);
Er 10
Communication
failure between
inverter
modules(main
board is
disconnected
with drive
board)
1. The communication wiring between the
compressor drive and the main controller is
loose;
2. The communication wiring between the
compressor drive and the main controller is
disconnected;
3. The connection position of the drive end
or the main control end is incorrectly
selected;
4. The compressor drive is damaged and not
powered on.
1. Check whether the connection position of the
communication line at both ends of the driver
and the main control is correct;
2. Check whether the communication wiring is
broken or loose, if so, replace the
communication line;
3. Check whether the compressor drive is
normally powered on; (the LED flashes when
the compressor drive is working normally);