Mitsubishi MSH-24RV User Manual

66
Check of outdoor thermistor
Measure
resistance
between CN 661
1 and 2.
Measure
resistance
between CN 662
3 and 4.
No
Yes
Replace the
thermistor.
Measure
resistance
between CN 662
1 and 2.
Connect CN661 and
CN662.
Turn ON the power
supply and press
the EMERGENCY
OPERATION
switch.
Does the resistancs
of thermistor have
the characteristics
on page 69 or 70?
No
Yes
Does the unit operate
10 minutes or more?
Replace the deicer P.C.
board.
Ok W1.
W1. It is thought defective contact of the connector.
Turn OFF the
power supply.
<MSH-30RV>
Discharge temperature
thermistor(RT62)
<MSH-24/30RV>
Ambient temperature
thermistor(RT63)
Defrost thermistor(RT61)
When OPERATION INDICATOR lamp flashes 6-time.
Thermistors in the outdoor unit are abnormal.
J
Check of LEV (Expansion valve)
I
Replace the
LEV coil.
With remote controller set toward the indoor unit, press
OPERATE/ STOP(ON/ OFF) button and confirm one
beep tone.
LEV operates in full-opening
direction.
Is LEV coil properly fixed to
the body?
Ok
Do you hear LEV "click,
click·······"?
Do you touch LEV and feel
it vibrate?
Does the resistance of LEV coil
have the characterictics?
No
Yes
Yes
Yes
No
LEV (CN724)
WHT–RED
RED–ORN
YLW–BRN
BRN–BLU
Resistance
30.3 " ~ 37.0 "
Characteristics of LEV coil
No
Properly fix LEV coil to
the body.
Replace the
deicer P.C. board.
NOTE : After check of LEV, do the undermentioned operations.
1. Turn OFF the power supply of the unit and turn ON again.
2. Press the RESET button on the remote controller.
1 During pressing OPERATION SELECT button
on remote controller, press RESET button.
2 First, release RESET button.
(Confirm all displays of remote controller.)
3 Then release OPERATION SELECT button.
1 During pressing OPERATION SELECT
button on remote controller, press
RESET button.
2 First, release RESET button.
(Confirm all displays of remote controller.)
3 Then release OPERATION SELECT button.
AMPM
CLOCK
˚C
AMPM
<MSH-30RV>
When OPERATION INDICATOR lamp flashes 10-time.
Heating/ Cooling doesn't operate.
w Disconnect the connectors CN661 and/ or CN662 from the deicer P.C. board.
(Check the characteristics of each thermistor.)
OB272-3.qxp 02.1.26 1:24 PM Page 66

Mitsubishi MSH-24RV Specifications

General

Brand	Mitsubishi
Model	MSH-24RV
Category	Air Conditioner
Language	English