Daikin 2MX18AXVJU User Manual

Troubleshooting DAMA-SM-21-003
70 Service Diagnosis
Reference
Reference
4.14 Input Overcurrent Detection
Error Code E8
Description Input Overcurrent Detection
Method of Error
Detection
An input overcurrent is detected by checking the input current value with the compressor
running.
Error Decision
Conditions
 The current exceeds 10.2 A (depending on the model) for 2.5 seconds with the compressor running.
 The upper limit of the current decreases when the outdoor temperature exceeds a certain level.
Supposed
Causes
 Outdoor temperature out of operation range
 Defective compressor
 Defective power module
 Defective outdoor unit PCB
 Short circuit
Troubleshooting
Cautions:
Be sure to turn off the power switch before connecting or disconnecting connectors, or parts
may be damaged.
An input overcurrent may result from wrong internal wiring. If the system is interrupted by an
input overcurrent after the wires have been disconnected and reconnected for part
displacement, check the wiring again.
Check No.17 Refer to P.89
Check No.18 Refer to P.89
Check No. 17
Check the installation condition.
Check No. 18
Check the discharge pressure.
Start operation and measure the
Input current.
Input current flowing
above its stop level?
Replace the outdoor
unit PCB (main PCB).
YES
NO
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Caution
DAMA-SM-21-003 -Inverter Multi Split-CTX Series.book Page 70 Wednesday, September 1, 2021 5:44 PM

Daikin 2MX18AXVJU Specifications

General

Brand	Daikin
Model	2MX18AXVJU
Category	Heat Pump
Language	English