Johnson Controls 22 SEER User Manual

898841-UIM-B-0113
40 Johnson Controls Unitary Products
34
Module high
temperature
protection
P8
OFF 3S
and blink
19 times
■□☆■
During cooling operation,
compressor will stop while
indoor fan will operate;
During heating operation,
the complete unit will stop.
After the complete unit is
de-energized for 20mins, check
whether the thermal grease on
IPM Module of outdoor control
panel AP1 is sufficient and whether
the radiator is inserted tightly. If its
no use, please replace control
panel AP1.
35
Malfunction of
voltage dropping
for DC bus-bar
U3
OFF 3S
and blink
20 times
□■■■
During cooling and drying
operation, compressor will
stop while indoor fan will
operate; During heating
operation, the complete
unit will stop.
Supply voltage is unstable.
36
Voltage of DC
bus-bar is
too low
PL
OFF 3S
and blink
21 times
□■■□
During cooling and drying
operation, compressor will
stop while indoor fan will
operate; During heating
operation, the complete
unit will stop.
1. Measure the voltage of position
L and N on wiring board (XT), if the
voltage is higher than 150VAC,
turn on the unit after the supply
voltage is increased to the normal
range.
2.If the AC input is normal,
measure the voltage of electrolytic
capacitor C on control panel (AP1),
if its normal, there’s malfunction for
the circuit, please replace the
control panel (AP1).
37
Limit/ decrease
frequency due to
high temperature
of module
EU
■■■☆
All loads operate normally,
while operation frequency
for compressor is decreased.
Discharging after the complete unit
is de-energized for 20mins, check
whether the thermal grease on
IPM Module of outdoor control
panel AP1 is sufficient and whether
the radiator is inserted tightly. If its
no use, please replace control
panel AP1.
38
The four-way
valve is abnormal
U7
■□☆□
If this malfunction occurs
during heating operation,
the complete unit will stop
operation.
1.Supply voltage is lower than
AC175V;
2.Wiring terminal 4V is loosened
or broken; 3.4V is damaged,
please replace 4V.
39
Zero crossing
malfunction of
outdoor unit
U9
■■☆□
During cooling operation,
compressor will stop while
indoor fan will operate;
during heating, the complete
unit will stop operation.
Replace outdoor control panel
AP1.
40
Limit/ decrease
frequency due to
antifreezing
FH
■■■□
All loads operate normally,
while operation frequency for
compressor is decreased.
Poor air-return in indoor unit or
fan speed is too low.
TABLE 13: Error Codes - 18K 24K (Continued)
No.
Malfunction
Name
Display Method of Indoor Unit
Display Method of Outdoor
Unit (Indicator has 3 kinds of
display status and they will
be repeated every 5s.)
A/C status Possible Reasons
Dual-8
Code
Display
Indicator Display (during
blinking,
ON 0.5s and OFF 0.5s)
□ OFF
■ Illuminated
☆ Blink
Operation
Indicator
Cool
Indicator
Heating
Indicator
D5
(D40)
D6
(D41)
D16
(D42)
D30
(D43)

Johnson Controls 22 SEER Specifications

General

Brand	Johnson Controls
Model	22 SEER
Category	Air Conditioner
Language	English