10 Servicing
381
SMGB0064 rev.0 - 08/2011
10
Removing expansion valve coil
1 Remove the service cover according to the section Removing service cover, see on page 372 in this chapter.
2 Open the P-mounting plate according to the section Opening electrical box (P-mounting plate), see on page 379 in this
chapter .
D A N G E R
• Check that the LED201 (red) located on the “W” surface PCB is OFF when opening the P-mounting plate.
• Do not touch the electrical components when LED201 (Red) located on the “W” surface PCB is ON in order
to avoid an electrical shock.
3 Remove the CN5A connector on the control PCB of the electrical box.
4 Hold the expansion valve coil and slightly rotate then pull it up. Refer to the gure below to replace the electrical valve.
The lock mechanism is equipped with the expansion valve coil. Check to ensure that the expansion valve coil is locked.
1. Pull out the electronic expansion valve coil upwards.
2. Release lock.
3. Electronic Expansion Valve Coil.
4. Liquid Tank.
5. Lock Part.
6. Electronic Expansion Valve Coil.
7. Electronic Expansion Valve.
2
3
4
5
3
6
Removing reversing valve
1 Remove the service cover and the rear service panel according to the sections Removing service cover, see on page 372
and Removing the lower part of service panel and rear panel, see on page 373 in this chapter.
2 Collect the refrigerant from the check joint according to the section Removing the compressor, see on page 375.
3 Remove the reversing valve coil according to the section Removing the coils for reversing and solenoid valve (SVA1
SVA2 and SVF), see on page 380.
4 Remove one (1) xing screw for the valve-mounting plate.
5 Remove the stop valve at the gas side from the valve-mounting plate by removing the two (2) screws.
6 Remove the reversing valve assemblies from the 4 brazed parts where it is xed. Remove the brazing of the reversing
valve and the stop valve at the gas using a blowtorch. Cool down the piping side covering it with wet cloth in order to
avoid brazing material entering the reversing valve. Protect the connecting wires and pipe insulation from the brazing
frame.
7 Remove the reversing valves from its assemblies 4 brazed parts.
8 Perform the brazing with a blowtorch remove and reassemble the reversing valve by cooling the pipes rst with wet
cloth in order to avoid brazing material entering the reversing valve.
9 Reassemble the parts in the reverse order of removing procedures contained in this chapter. When SFV is removed x
it according to the sections Removing expansion valve, see on page 382 and the Removing solenoid valve, see on page
382 contained in this chapter.
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