Table of Contents
Advertisement
DIAGNOSIS AND SOLUTION (CONT)
Table 24—Over Voltage or Too Low Voltage Protection Diagnosis and Solution (P1)
Error Code
Malfunction Decision Conditions
Supposed Causes
Troubleshooting
Check the power supply. Is it
in working order?
Check the connections and
w i r e s . Are they in working
order?
Turn power on and while the unit is in
standby, check if the voltage between P
and N is at DC 310V, 340V or 380V?
Then start up the unit and measure the
voltage between P and N. Is it in now
between 220V~400V?
Check the reactor. Is it in
Replace the reactor
P1
An abnormal current rise is detected by checking the specified current detection circuit.
S
Power supply problems
S
System leakage or blockage
S
PCB faulty
Yes
Yes
Yes
working order?
Yes
Turn off the unit
No
Ensure proper connections or
No
replace the wires
No
Replace the IPM board
No
Replace outdoor main PCB
30
Advertisement
Table of Contents
