Read Sharp AE-XM24CR (serv.man10) Service Manual online
44
AY-XM7/9/12CR
AY-XPM7/9/12CR
AE-XM18/24CR
AY-XPM7/9/12CR
AE-XM18/24CR
: Blinks at 1-second intervals
: OFF
: ON
: Blinks 3 times at 0.1-second intervals
Indoor and outdoor unit
completely stopped
Display by indoor unit operation lamp
Displayed in a pattern which comes on at the
same time as the timer lamp
4 seconds off
What to check, procedure
Display by
outdoor
unit lamp
LED
51 ~ 52
Diagnosis
Solution
Condition
of indoor
and
outdoor
unit
5 times
6 times
7 times
AC overcurrent error
1. Is the discharge outlet of the outdoor unit clogged ?
1. Clear the discharge outlet.
8 times
Abnormal wire check
1. Check the attached point CN8B of outdoor unit.
2. Measure the resistance value of thermistor TH5, TH6, TH7
of outdoor unit.
3. Check the expansion valve. (unit A, unit B, unit C)
4.
Are four expansion valves connected by mistake ?
5. Check the wiring between units.
1.Reattach
2.Replace the outdoor thermistor
assembly. (TH5, TH6, TH7)
3.Replace the outdoor control
board assembly.
4. Reattach
5. Check the wiring between units.
6. Check the incorrect wiring.
(When connection between the
units is wrong as follows)
1.Replace Power module (IPM)
2.Replace the outdoor Power
supply P.W.B..
3.Rewire
1.Replace Power factor module
(AF1)
1.Replace the outdoor control
board assembly (Current
transformer is broken.)
1.Reattach.
2.
Replace the outdoor thermistor
assembly. (RTHM-A022JBE0)
or (RH-HXA024JBZZ or
RH-HXA022JBZZ )
1. Can voltage be detected at the current transformer on the
outdoor unit control board?
1. Are the connectors of the outdoor unit thermistors well
attached ?
2. Measure the resistance of thermistors TH1, TH2, TH3,
TH4, TH5, TH6, TH7 on the outdoor unit (see Figure 2).
AC abnormal current
error
Open circuit of the
thermistor error
A
B
Indoor unit
Outdoor unit
UNIT A
UNIT B
C
UNIT C
(Example)
Terminal
board
9 times
Rotation error of the
compressor
1. Check the voltage (18V) between BCN14 3 and 4
2. Check the compressor terminal and Power module terminal
RED : S(COMP), U(IPM), WHITE : C(COMP), V(IPM),
ORANGE : R(COMP), W(IPM)
11 times
Power factor module
(AF1) error
1. Check the resistance value among the terminal of the
power factor module (L - and OUT -)
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