Key Component Check Procedures; Error Indications And Corrective Actions - Mitsubishi MJ-E16V-S1 Service Manual

8.2 Key Component Check Procedures

Component name
Tub temperature
sensing thermistor
P11
Room
temperature and
humidity sensor
board
Compressor
Fan motor
Solenoid valve
coil
Stepping motor

8.3 Error Indications and Corrective Actions

Indication
(Timer display)
All Mode
lamps lit
All timer
lamps lit
COLD LAMP
flashing
24
Detach the connector and measure the resistance using a multimeter
(component temperature: 10°C to 30°C).
Normal
Between P11 pins: 8.0kΩ to 20.8kΩ
Detach the connector and measure the resistance using a multimeter
(component temperature: 10°C to 30°C).
Normal: 47 to 51kΩ (between P10 pins 3 and 4)
Abnormal: Open or shorted
With the connector detached, measure the resistance across the terminals using a multimeter
(winding temperature: 10°C to 30°C).
C-R side
C-S side
Measure the resistance between terminals using a multimeter
(winding temperature: 10°C to 30°C).
Yellow-Blue
Black-Blue
Measure the resistance between terminals using a multimeter
(component temperature: 10°C to 30°C).
Normal
2.6kΩ ~ 2.9kΩ
Measure the resistance across terminals with a multimeter.
(Part temperature: approx 25°C)
Terminals 1-2
Terminals 1-3
Terminals 1-4
Terminals 1-5
Error (failure)
Frequency determination error
Watchdog error
RAM error
Compressor
Disconnection or short circuit in room
or tube temperature thermistor
Testing procedure
Open or shorted
Normal
25.0Ω ~ 27.1Ω
67.9Ω ~ 73.5Ω
Normal
258Ω ~ 280Ω
379Ω ~ 411Ω
Open or shorted
Normal
342Ω ~ 418Ω
Check power plug and 100V power supply
(Try replacing main and power supply boards)
Replace main board
(Try replacing main and power supply boards)
Replace main board
Check blowing performance
Check tube temperature thermistor
Check compressor operating noise
P.10, P.11 Connection check
Check each thermistor
Abnormal
Abnormal
Open or shorted
Abnormal
Open or shorted
Abnormal
Abnormal
Open or shorted
Corrective action