Read Sharp AE-M18 (serv.man2) Service Manual online
19
AY-M09AE
AE-M18AE
AE-M18AE
2. For the other errors which are not displayed by the self-diagnosis, refer to the troubleshooting flow
chart in Page 21.
Method to repair the control circuit which does not work due to improper wiring between the units
Since a part in the control circuit may be broken, replace the following parts.
Using the tester, check the thermal fuse for continuity(after turning off the power supply and disconnecting
CN5 of the outdoor unit.)
Using the tester, check the thermal fuse for continuity(after turning off the power supply and disconnecting
CN5 of the outdoor unit.)
(1) Control circuit of indoor unit
1) Thermal fuse
TC
115˚C
2) Photo coupler
PC1 PC111L
(2) Control circuit of outdoor unit
1) Thermal fuse
TC
115˚C
2) Photo coupler
PC2 PC111L (Room A1)
PC4 PC111L (Room A2)
PC4 PC111L (Room A2)
(3) Procedure to install the thermal fuses in the control circuits of the indoor and outdoor units.
RESISTOR
FUSE
INDOOR SIDE
FUSE
RESISTOR
OUTDOOR SIDE
Fig. T-3
(Caution)
(1) Closely install the fuse on the resistor.
(1) Closely install the fuse on the resistor.
(The mass production type is bonded with silicon rubber.)
(2) Solder the fuse for the shortest possible time.
If it is done for a long time, the fuse may be off.
The fuse of the outdoor unit is commonly used in both the rooms A1 and A2.
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