Movincool CLASSICPLUS26 サービスマニュアル

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Repair Section
32
7.3 Troubleshooting Chart
• To accurately troubleshoot the problem, it is important to carefully confirm the nature of the
problem. Typical problems are:
- Insufficient cooling.
- Unit does not start (operate).
- Overflow of drain water.
- Abnormal noise or vibrations.
- Others.
(1) Insufficient cooling
• Cooling system problem generally results from electrical or mechanical components such as fan
motor, compressor, control switch.
< NOTE >
• There is a possibility of insufficient cooling due to clogging of the air filter. So make sure to first
check if the air filter is clogged or not.
• Check the power supply because of the possibility of power source failure.
• Check the installation site for operating temperature and installation space (unobstructed airflow).
Activation of high 
pressure switch
When high pressure switch 
(connected to J104) activates 
(=J104 input turns to open) 3 times 
in 24 hr, “HP” is indicated and signal 
output (J106) turns on.
When it activates 10 times in 24 hr, 
“FAIL HP” is indicated and buzzer 
sounds.
Find the cause of high pressure to 
address it.
Check the following.
Ambient air temperature
(70 °F (21 °C), 50 %RH
⇔113 °F 
(45 °C), 50 %RH)
Air filter (if dirty, wash up.) 
Condenser fan motor (if not 
working, replace.) Defect of high 
pressure switch (if switch is open 
when unit is off, replace switch.) 
Reset the system.
To RESET: Press ON/OFF and
HI/LO buttons on the control box 
simultaneously for 5 sec.
LCD Display
Description
Condition
Reset/Remedy
TU
AM
F
SET TEMP
HI
ON
COOL
FAN