Table of Contents
Checking code
Meaning, detecting method
1102
Discharge
1. When 140˚C (284˚F) or more
temperature
discharge temperature is de-
abnormality
tected during operations (the
(Outdoor unit)
first time), outdoor unit stops
once, mode is changed to re-
start mode after 3 minutes, then
the outdoor unit restarts.
2. When 140˚C (284˚F) or more
temp. is detected again (the
second time) within 30 minutes
after stop of outdoor unit, emer-
gency stop is observed with
code No. "1102" displayed.
3. When 140˚C (284˚F) or more
temp. is detected 30 or more
minutes after stop of outdoor
unit, the stop is regarded as the
first time and the process
shown in 1 is observed.
4. 30 minutes after stop of outdoor
unit is intermittent fault check
period with LED displayed
(1202).
Cause
1) Gas leak, gas shortage.
2) Overload operations.
3) Poor operations of indoor LEV.
4) Poor operations of BC controller
LEV:
Cooling-only : LEV3
Cooling-main : LEV1, 3
Heating-only, Heating-main:
LEV3
Defronst
: LEV3
5) Poor operations of BC controller
SVM :
Cooling-only, defrost
6) Poor operations of BC controller
SVA :
Cooling-only, Cooling-main
7) Poor operations of BC controller
SVB :
Heating-only, Heating-main
8) Poor operations of solenoid
valves.
SV (3 ~ 6)
Heating-only, Heating-main
9) Setting error of connection
address.
10)Poor operations of ball valve.
11) Outdoor unit fan block, motor
trouble, poor operations of fan
controller→Heating (Heating-only,
Heating-main).
3) ~ 11) : Rise in discharge
temp. by low pressure drawing.
12)Gas leak between low and high
pressures.
4-way valve trouble, compres-
sor trouble, solenoid valve
SV1 trouble.
13)Poor operations of solenoid valve
SV2.
Bypass valve SV2 can not
control rise in discharge temp.
14)Thermistor trouble.
15)Thermistor input circuit trouble on
control circuit board.
–87–
Checking method & Countermeasure
See Refrigerant amount check.
Check operating conditions and opera-
tion status of indoor/outdoor units.
Check operation status by actually
performing cooling or heating opera-
tions.
Cooling
: Indoor LEV
(Cooling-only) LEV1, 3 (BC)
SVA (BC)
Heating
: Indoor LEV
(Heating-only) LEV3 (BC)
SVB (BC)
SV3 ~ 6
See Trouble check of LEV and sole-
noid valve.
Check address setting of indoor unit
connection.
Confirm that ball valve is fully opened.
Check outdoor fan.
See Trouble check of outdoor fan.
Check operation status of cooling-only
or heating-only.
See Trouble check of solenoid
valve.
Check resistance of thermistor.
Check inlet temperature of sensor
with LED monitor.
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