Service manual
5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Remote controller of COOL & HEAT type is outdoor unit
accessory.
Remote controller is included as an indoor unit accessory.
Accumulator has been removed.
Compressor has changed.
Compressor capacitor has changed. Due to different
shape, compressor capacitor for E4 is not interchangeable
with the ones for E1,E2 and E3.
The mark of terminal block has changed. Terminal block
for E4 is interchangeable with the ones for E1, E2 and E3.
Deicer P.C. board has changed. Jumper wire of compulsory
defrosting mode has changed.
(JP607-R853➔JPDS-JPSG)
Jumper wire for defrost setting has changed.
(JPC-JPE➔JRF-JRG) (Refer to page 26.)
The defrosting intervals which are changed by setting a short
circuit are the same as E1, E2, and E3.
Deicer P.C. board for E4 is not interchangeable with the
ones for E1, E2 and E3.
Wiring diagram has changed according to the following
reasons; the shape of connectors CN711 and CN661 has
changed and R.V. coil relay (X62) has changed into SSR (SR62).
X62 has changed into SR62 in Example of Operation
time chart in HEAT operation.
Compared to E1, E2, and E3, no change has been made about
the operational condition for defrosting and tne control system of
R.V. coil (timing of switching on/off).
The shape of propeller fan has changed. The number of
propeller fan has changed from four to three. Propeller
fan for E4 is not interchangeable with the ones for E1,E2, and E3.
The shape and diameter of axis of fan motor have changed.
The shape of connector has changed.
Fan motor and connector for E4 are not interchangeable
with those for E1, E2 and E3.
Refrigerant filling capacity has changed. 0.80kg➔ 0.85kg
The method of checking serial signal error for E4 has been added.
The method of troubleshooting for outdoor unit has changed.
The method for checking thermistor has been added to
troubleshooting.
The method for checking 4-way valve has been added to
troubleshooting.
The repairing procedure when outdoor unit does not stop has
been added to troubleshooting.
Circle shows that change points apply to the models.
Change point
No.
MUH-07RV-
E1
E2
E3
MUH-09RV-
E1
E2
E3
MUH-12RV-
E1
E2
E3
E4
E4
E4
MUX-10RV -
MUX-18RV -
MUX-24RV -
MXZ-18RV -
E1
E1
E1
E1
MUX-10RV -
MUX-18RV -
MUX-24RV -
MXZ-18RV -
E2
E2
E2
E2
1. Remote controller is unprovided as the outdoor unit accessory.
OB252C-1.qxp 02.4.25 11:27 AM Page 5