245
Troubleshooting Guide
18
U5
□
■
ƿ
■
19
P5
□
ƿ
□
□
20
H1
21
H2
22
H3
□
ƿ
ƿ
□
23
H4
24
H5
■
□
■
■
25
HC
□
■
ƿ
ƿ
26
H7
□
ƿ
■
ƿ
27
H0
■
□
ƿ
ƿ
28
Lc
□
ƿ
□
ƿ
29
U1
□
ƿ
■
□
30
EE
□
□
□
■
31
PU
□
■
□
■
32
P7
□
□
■
ƿ
33
P8
■
□
ƿ
■
is too high
Blink 11
times
Fan motor works.
Heating: all will stop
Whole unit’s
current testing
malfunction
Compressor
current overcurrent
protection
Defrosting
Electrostatic dedust
protection
Compressor
overload
protection
System
abnormal
IPM protection
PFC protection
Heating, anti-high
temp. declines
Startsup
fail
Compressor
current
testing
circuit malfunction
EEPROM
malfunction
Capacitor
charge
malfunction
Module sensor
circuit diagram
Module
temp.
over high
protection
Off 3s
blink 13
times
Off 3s
blink 15
times
Off 3s
blink once
Off 3s
blink twice
Off 3s
blink 3
times
Off 3s
blink 4
times
Off 3s
blink 5
times
Off 3s
blink 6
times
Off 3s
blink 7
times
Off 3s
blink 10
times
Off 3s
blink 11
times
Off 3s
blink 13
times
Off 3s
blink 15
times
Off 3s
blink 17
times
Off 3s
blink 18
times
Off 3s
blink 19
times
Compressor
lose steps
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Under the heating mode,
compressor running, indoor
fan motor stop working
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Overload normal works,
compressor running,
frequency declines
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
Cooling, dehumidifying;
compressor stops running,
indoor fan motor works.
Heating: all will stop
running
It is normal
function
The circuit on AP1 has
malfunction, replace the
outdoor unit AP1
Please refer to troubleshooting
(IPM protection, compressor
lose steps, compressor current
overcurrent protection)
Pls refer to troubleshooting
Pls refer to troubleshooting
Pls refer to troubleshooting
Pls refer to troubleshooting
Replace the outdoor control plate AP1
Replace the outdoor control plate AP1
Replace the outdoor control plate AP1
Pls refer to Part 3 capacitor charge
of troubleshooting
Pls refer to troubleshooting
Pls refer to troubleshooting
After whole unit power off 20mins,
check the coolant on AP1’s IPM Module
whether is sufficient or not, whether the
radiator is tightened or not. If it is not ok
please improve or
If higher than 265VAC,
until the power supply
rise up to normal range
then to turn on the unit;
2. If AC input is normal,
after unit is turned on, to
test the both sides votage of
electrolytic capacitor on AP1,
if they are normal, that the
circuit of voltage testing part
has malfunction, pls replace
the AP1
1. Wire terminal OVC-
COMP loosen or circuit,
normal phenomenon use
ohm meter to test both
sides of resistance value
should be less than 1ohm.
2.Please refer to troubleshooting
(air exhaust, overload)
Summary of Contents for EVJC 12
Page 2: ...74 74...
Page 30: ...102...
Page 32: ...104 www johnsoncontrols com...
Page 34: ...106 by johnson controls 2...
Page 46: ...118...
Page 48: ...120 www johnsoncontrols com...
Page 49: ...121 High Wall EVHC 09 to 12 DSAAAR SERVICE MANUAL SM EVHC D 09 12GB 05 10 EVHC 09 EVHC 12...
Page 65: ...137 LULQJ LDJUDP Schematic Diagram Indoor Unit Schematic Diagram...
Page 66: ...138 Schematic Diagram Outdoor Unit...
Page 69: ...141 TOP VIEW Schematic Diagram BOTTOM VIEW 1 3 4 5 6 2 7 8 9 10 11 12 Outdoor Unit...
Page 113: ...185 Exploded View Exploded View Indoor Unit...
Page 114: ...186 Exploded View Outdoor Unit...
Page 118: ...190 High Wall EVHC 18 to 24 DSAAAR SERVICE MANUAL SM EVHC D 18 24GB 05 10 EVHC 18 EVHC 24...
Page 132: ...204 LPHQVLRQV Dimensions QGRRU 8QLW Tube exit Air inlet Right Left Ceiling W D H 02 18K 24K...
Page 133: ...205 890 340 955 560 380 424 700 60cm 60cm 60cm 60cm LPHQVLRQV Outdoor Unit Bolt Nut Spanner...
Page 140: ...212 TOP VIEW Schematic Diagram BOTTOM VIEW 1 2 3 4 5 6 7 8 9 7 8 9 10 11 12 13 1 2 3 4 5 6 10...
Page 142: ...214 Schematic Diagram Key testing spot bottom...
Page 197: ...269 Exploded View Exploded View Indoor Unit 78 Model EVKC 18 DS...
Page 198: ...270 Exploded View Model EVKC 24 DS 79...
Page 199: ...271 Exploded View Outdoor Unit 80...