Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 430

[8-15 Main-HBC Maintenance Instructions ]
8-15-12 Thermistors (TH12, TH14, TH15, and TH34) Replacement Procedure (HBC)
Operation procedures
1) Remove the eight fixing screws from the
service panel (front lower) and then re-
move the service panel (front lower).
Disconnect all wires from the circuit
board except the power-supply wire,
and open the control box.
2) Remove the thermistor from the front of
the unit and then replace it.
3) Pull the thermistors to be replaced out of
the thermistor holder, and unclamp the
wires. Two thermistors are connected to
the same connector. Disconnect both
thermistors when one is replaced. Table
below shows which thermistors are
paired. It also shows the holder and wire
label colors. See the figures at right for
the locations of the thermistors.
TH pairs
Number Color — Number Color
TH13
TH11 White
Red TH14
TH12
TH16
TH15 Green
TH32 Orange TH35
Purple TH34
TH33
4) Replace the thermistors with the new
ones, reconnect all connectors.
Reconnect the wires, and close the con-
trol box.
Lift the bottom of the control box when
closing the control box. Otherwise, the
tab at the control box may become bent.
BS_08_L
Control box
Service panel
(front lower)
Yellow
Blue
Red
Pink
Black
TH32
Illustrations
TH13
TH33
TH11
TH35
Operation
location
Installation
location
TH15
TH16
TH14
TH12
TH34
chapter 8 -
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