13
OPTION/EXTENSIONS OF COMMUNICATION
WIRING — To extend control wiring or make terminal
connections, use the PQE connection wire supplied in the
accessory kit and follow the steps below.
1. Cut connector on outdoor unit side as shown in Fig 20.
Fig. 20 —Shearing Outdoor Connector
2. Strip a suitable length of the insulation layer as shown in
Fig. 21.
Fig. 21 —Stripping the Wire
3. Use a suitable screwdriver to fix the communication wire
on the outdoor unit communication terminal as shown in
Fig. 22.
Fig. 22 —Connecting Communication Wire to
Outdoor Unit Communication Terminal
If communication wires are used to connect between indoor
units, find the corresponding port and plug it directly as shown
in Fig. 23.
Fig. 23 —Connecting the Communication Wires
START-UP
Trial Run —
Set a different address for each indoor unit.
Addresses can range from 0 to 63. Address can be set
randomly using “Automatic Search Address” function, or set
addresses manually using wireless remote or wired controller.
Select and assign an indoor unit as 63. This unit will be in
“priority mode” and will control whether the system is in
heating or cooling.
Error Codes —
Error codes are shown on the LED
display on the main control board. Press the CHECK button on
the main control board to scroll sequentially through error
codes. Refer to Fig. 14 for LED display location (DIS1), and
CHECK button location. Refer to Table 10 for an explanation
of error codes.
Table 10 — List of Error Codes
CAUTION
NEVER CONNECT the main power source to the control
or communication terminal block.
USE AN APPROPRIATE SCREWDRIVER for
tightening the terminal screws. Do not over tighten the
terminal screws.
Failure to follow these procedures may result in personal
injury or damage to equipment.
ERROR
CODE
EXPLANATION
E2
Communication error between indoor unit and outdoor
unit
E4
T3 or T4 temperature sensor error
E5
Power voltage protection
E6
DC Fan error
E7
Discharge temperature sensor error
E9
EEPROM error
E.9.
Mismatched main chip with EEPROM
EA
DC Fan error more than 5 minutes in heating mode
Eb
E6 error more than 2 times in 10 minutes
P1
High pressure protection
P2
Low pressure protection
P3
Input current overload
P4
Discharge temperature (T5) protection
P5
Condenser temperature (T3) protection
P8
Fan speed exceeds setpoint for 5 seconds or more.
PE
High indoor coil temperature
PP
Liquid slugging protection; indoor evaporator superheat
too low
F1
DC bus voltage is too low for 5 seconds
H0
Communication error between power driver board and
main board
H4
L0 or L1 error more than 3 times in 60 minutes
L0
Fault in compressor module
L1
DC bus under-voltage protection
L2
DC bus over-voltage protection
L4
Compressor MCE error
L5
Low compressor speed (Reserved)
L7
Compressor wrong phase protection (Reserved)
L8
Compressor speed difference is one second more than
15 rps
L9
Compressor speed difference between setting speed
and running speed more than 15 rps
LEGEND
EEPROM
—
Electrically Erasable Programmable Read-Only Memory
MCE
—
Motion Control Engine
