4
5. MALFUNCTION
Malfunction display of the outdoor unit’s DSP1
Table.5-1
E0
E1
E2
F3
F5
F6
xH0
H2
H3
H6
H7
H8
H5
C7
P1
P2
xP3
P4
P5
xP9
xPL
xL1
xL2
XL4
PP
xL0
Error
code
Error description
Communication error between outdoor units
Phase sequence error
Communication error between indoor and
master unit
xL5
xL7
xL8
xL9
Qty. of outdoor unit increases error
Inverter-module protection
3 times of P2 protection in 60 minutes
3 times of P4 protection in 100 minutes
Qty. of indoor units mismatching
High pressure sensor error
10 times of P9 protection in 120 minutes
yHd
3 times of PL protection in 100 minutes
H9
Slave unit malfunction(y=1,2 . e.g ,1Hd
stands for slave unit 1 error)
High pressure protection or discharge
Temp. switch protection
Low pressure protection
Compressor current protection
Discharge Temp. protection
High Temp. protection of condenser
Fan module protection
Inverter compressor module error
DC bus low voltage protection
DC bus high voltage protection
MCE error
Zero speed protection
Phase sequence protection
Compressor frequency variation greater than
15Hz within one second protection
Actual compressor frequency differs from target
frequency by more than 15Hz protection
Qty. of outdoor unit decreases error
Inverter module Temp. protection
Compressor discharge insufficient superheat
protection
E4
E5
E6
xE9
xF1
T3/T4 Temp. sensor error
Abnormal power supply voltage
Reserved
Discharge Temp. sensor error
Outdoor unit address error
EEPROM mismatch of compressor
DC bus voltage error
T6B Temp. sensor error
T6A Temp. sensor error
Electronic expansion valve connection error
E7
E8
xH4
Communication error between main board
and compressor drive board
Remarks
Only displayed on the slave unit with the error
Displayed on the unit with the error
Only displayed on the master unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Reserved
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Only displayed on the master unit with the error
Only displayed on the master unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Only displayed on the master unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Only displayed on the master unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Note:
1. 'x' is a placeholder for the compressor system (compressor and related electrical components),with 1 representing compressor system A and 2 representing
compressor system B. 'y' is a placeholder for the address (1or2) of the slave unit with the error.
2. For some error codes,a manual restart is required before the system can resume operation.
