UNIT MAINTENANCE &
SER
VICE GUIDE
INST
ALLER'S
INSTRUCTION
TROUBLE SHOOTING
P33 OF 38
INSTALLATION AND MAINTENANCE OF ENHANCED FILTER
CONFIRMATION
1) Power Connection
Check and confirm that the power breaker of proper size is installed and can operates (ON/OFF) normally.
2) Power Voltage
Check and confirm that power voltage is AC 208-230V
10%. If power voltage is not falling in this range, the
unit may not operate properly and damage may be caused.
FLASHING LED OF INDOOR/OUTDOOR UNIT AND PRIMARY JUDGEMENT
P34 OF 38
Take out the (enhanced) filter before cleaning according to the installation instruction. Pay special attention tthat
silver ion filter can't be cleaned with water, while active carbon, photo catalyst, low temperature conversion (LTC)
catalyst, formaldehyde eliminator, ca-techin or mite killing filter can (but can't be cleaned with brush or hard/sharp
tools). Dry and reinstall it after cleaning. Make sure to replace securely and properly.
CLEANING AND MAINTENANCE (Regular Filter and/or Other Enhanced Filters)
FILTER LIFETIME
The washable filter will last a long time. But some (enhanced) filters may only have a lifetime about one year
under normal
. As far as the silver ion filter, it will
invalid when its surface becomes
of
conditions
become
black (green).
INSTALLATION INSTRUCTIONS
No.
Indoor unit display
Double 8 display
Indicator display (LED
blinks 0.5s-ON/0.5s-
OFF)
Running
LED
Cooling
LED
Heating
LED
D40 D41 D42 D43
Outdoor unit
display (LEDs
have 3 status)
Unit actions
Possible clauses
(Primary judgement)
High pressure of system, might be:
1) Refrigerant is too much;
2) Poor heating exchanging for units
(including heat exchanger is dirty
and unit heating radiating ambient
is poor);
3) Ambient temp. is too high.
E1
E2
Cooling, dehumidifying, except the
indoor fan motor is running, others
will stop running.
Cooling, dehumidifying: compressor,
outdoor fan motor will stop running,
indoor fan motor will keep running.
1) Poor indoor unit air returning;
2) indoor fan motor rotating speed
abnormal;
3) Evaporator ailter is dirty.
3s off
blink
once
3s off
blink
twice
1
2
Pls refer to trouble shooting (air
exhaust protection, overload)
3
E4
Cooling, dehumidifying: compressor,
outdoor fan motor will stop running,
indoor fan motor works. Heating: all
stop running.
3s off
blink
four
times
1) Forcibly lift up the panel at a specific angle from the two
ends of the front panel following the arrow direction.
Then pull the air filter downwards to remove it. (Fig.a)
2) Mount the healthy filter onto the air filter, (Fig.b). If the air
filter cannot be installed, please mount the healthy filter
on the front case. (Fig.c)
3) Mount the air filter properly along the arrow direction in
Fig.d, and then close the panel cover.
TROUBLE SHOOTING
4
1) Power supply is not stable,
fluctuation is too much;
2) Power supply is too low,
overload is too much.
Cooling, dehumidifying: compressor,
outdoor fan motor will stop, indoor
fan will work. Heating: all will stop.
Off 3s
blink
5 times
E5
5
Please refer to trouble shooting.
Cooling: compressor will stop,
indoor fan motor works. Heating:
all will stop.
E6
Off 3s
blink
6 times
6
Please refer to trouble shooting.
Cooling: compressor will stop,
indoor fan motor works. Heating:
all will stop.
Off 3s
blink
8 times
E8
H6
Off 3s
blink
11
times
Whole unit will stop to run.
1) Poor insert for GPF;
2) Indoor control board API
malfunction;
3) Indoor motor M1 malfunction.
7
C5
Off 3s
blink
15
times
Whole unit will stop to run.
Indoor control board
APl jump cap poor connected,
please pull and then or replace
the jump cap.
8
1) Room temp. sensor is not
connected with the control
panel AP1;
2) Room temp. sensor is damaged.
Cooling, dehumidifying: indoor fan
motor is running, other overloads
will stop. Heating: whole unit will
stop to run.
Off 3s
blink
once
F1
9
Protection
malfunction
status
System high
pressure
protection
Anti-freezing
protection
Compressor
air exhaust
high temp.
protection
AC overload
protection
Indoor and
outdoor units
communication
malfunction
Anti-high tcmp.
protection
Indoor unit
motor no
feedback
Jump wire cap
mal function
protection
Indoor ambient
sensor open
circuit,
short circuit
Indoor
evaporator
sensor circuit,
open, short
circuit
F2
Off 3s
blink
twice
Cooling, dehumidifying: indoor fan
motor running, other overload will
stop. Heating: whole unit will stop.
1) Tube temp. sensor is not
connected with the control panel
AP1;
2) Tube temp. sensor is damaged.
10
Air filter
enhanced
Ion carbon cold
catalyst
Enhanced
Fig.a
Fig.b
Fig.c
Fig.d
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !