39
8.2.9 High temperature protection of IPM or compress top diagnosis and solution (P2)
Error Code
P2
Malfunction decision
conditions
If the sampling voltage is not 5V, the LED will display the failure.
Supposed causes
●
Installation mistake
●
Power supply problems.
●
System leakage or block
●
PCB faulty
●
Connection problems
Trouble shooting:
For DA1821-H2, DA2421-H2,
For DA1221-H2,
Check if the fastening screws on the
PCB and IPM radiator are fixed
tightly.
Tighten the screws and apply silicon grease.
Replace the outdoor control PCB.
No
Yes
Check if the air flow system of indoor and
outdoor units are obstructed?
Clear up the air inlet and outlet or the heat
exchanger of indoor and outdoor units.
Turn off the power supply for 10
minutes. Turn back on. P2?
Is the temperature of
compressor top more than
90˚C?
Is the refrigerant
system normal?
Are all the connections good?
Especially the connection of
OLP(Over Load Protector)
sensor.
Is the resistance between the
two ports of the OLP zero?
Correct the
connection.
Replace the OLP.
Replace the outdoor control PCB.
Replace the outdoor control PCB.
Repair the refrigerant
system.
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Summary of Contents for DA1221-H2-I
Page 1: ...DuctlessAire ES Series Service Manual 2016 ABSSA B4 1601 ...
Page 8: ...6 For DA1221 H2 I For DA1821 H2 I DA2421 H2 I ...
Page 10: ...8 For DA1221 H2 O ...
Page 11: ...9 For DA1821 H2 O ...
Page 12: ...10 For DA2421 H2 O ...
