Disassembling The Electrical Parts Box; Removing The Thermistor (2-Phase Pipe) - Mitsubishi Electric PUHZ-P200YKA.UK Service Manual

OPERATING PROCEDURE

4. Disassembling the electrical parts box

(1) Disconnect all the connectors on the controller circuit board.
(2) To remove the controller circuit board, release it from the
support.
(3) Remove cont base fixing screws (2 for front/ 4 x 10). (Photo 5)
(The cont. base is fixed to the cont base piece with a hook
on the left side.)
(4) D isconnect all the connectors on the noise filter circuit
board. (Photo 6)
(5) T o remove the noise filter circuit board, release it from the support.
(6) Remove N.F. base fixing screws (2 for front/ 4 x 10). (Photo 7)
(7) D isconnect all the connectors on the power circuit board.
(8) To remove the power circuit board, remove power board fixing
screws (4 for front/ 4 x 12), then release the board from the
support. (Photo 8)
(9) The reactor is attached to the rear side of the electrical
parts box. (Photo 9)
(To remove the reactor, the electrical parts box must be
separated from the outdoor unit.)
Note: When reassembling the electrical parts box, make
sure the wirings are correct.
Photo 6
Photo 8
Screws
5. Removing the thermistor <2-Phase Pipe> (TH6)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) D isconnect the connector TH7/6 (RED) on the controller
circuit board in the electrical parts box. (See Photo 4)
(4) L oosen the fastener for the lead wire in the electrical parts box.
(5) Loosen the clamp for the lead wire on the top of electrical parts box.
(6) P ull out the thermistor <2-phase pipe> (TH6) from thermistor clip.
Note: When replacing thermistor <2-phase pipe>
(TH6), replace it together with thermistor
<Ambient> (TH7) since they are combined
together. Refer to procedure No.5 on the next
page to remove the thermistor <Ambient> (TH7).
OCH582B
Photo 5
Screw
Photo 7
Noise filter
Screw
circuit board
(N.F.)
Photo 9
Screws
Screws
Power circuit
board (P.B)
Photo 10
Cont. box top
97
PHOTOS
Controller
Cont base circuit board (C.B.)
Noise filter
base
Screw
Reactor
Screws
Electrical parts box
Thermistor
<2-phase pipe>
(TH6)
Screw