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Mitsubishi Electric PURY-(E)P200 Service Handbook page 193

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[ IX Troubleshooting ]
1. Error Code
1302
High pressure fault 2 (Outdoor unit)
2. Error definition and error detection method
If the pressure of 0.098MPa [14psi] or lower is registered on the pressure sensor immediately before start-up, it will trigger an
abnormal stop, and error code "1302" will be displayed.
3. Cause, check method and remedy
(1)
Inner pressure drop due to a leakage.
(2)
Pressure sensor failure
(3)
Shorted-circuited pressure sensor cable due to torn
outer rubber
(4)
A pin on the male connector on the pressure sensor
is missing or contact failure
(5)
Disconnected pressure sensor cable
(6)
Failure of the pressure sensor input circuit on the
controller board
1. Error Code
1500
Refrigerant overcharge
2. Error definition and error detection method
An error can be detected by the discharge temperature superheat.
1) If the formula "TdSH
restart mode, and starts up in three minutes.
2) If the formula "TdSH
tection), the unit comes to an abnormal stop, and the error code "1500" appears.
3) If the formula "TdSH
quence as Item "1 above (first detection) is followed.
4) For 30 minutes after the stop of the outdoor unit, preliminary errors will be displayed on the LED display.
3. Cause, check method and remedy
(1)
Overcharged refrigerant
(2)
Thermistor input circuit failure on the control board
(3)
Faulty mounting of thermistor (TH4)
HWE07130
Cause
10°C [18°F]" is satisfied during operation (first detection), the outdoor unit stops, goes into the 3-minute
10°C [18°F]" is satisfied again within 30 minutes of the first stoppage of the outdoor unit (second de-
10°C [18°F]" is satisfied 30 minutes or more after the first stoppage of the outdoor unit, the same se-
Cause
Check method and remedy
Refer to the page on the troubleshooting of the high
pressure sensor.(page 251)
Check method and remedy
Refer to the page on refrigerant amount
evaluation.(page 147)
Check the temperature and pressure readings on the sen-
sor that are displayed on the LED monitor.
Check the temperature and pressure readings on the ther-
mistor that are displayed on the LED monitor.
- 184 -
GB
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