Mitsubishi Electric PUHZ-ZRP100VKA3 Service Manual page 113

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) Disconnect all the connectors on the noise filter circuit
board. (Photo 6)
(5) To 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) Disconnect 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
Screw
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) Disconnect the connector TH7/6 (RED) on the controller
circuit board in the electrical parts box. (See Photo 4)
(4) Loosen 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) Pull 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.6 on the next
page to remove the thermistor <Ambient> (TH7).
OCH645
Photo 5
Screw
Photo 7
Noise filter
circuit board
Screw
(N.F.)
Photo 9
Screw
Screw
Power circuit
board (P.B)
Photo 10
Cont. box top
113
PHOTOS
Controller
Cont base circuit board (C.B.)
Noise filter
base
Screw
Reactor
Screw
Electrical parts box
Thermistor
<2-phase pipe>
(TH6)
Screw