Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 225

[7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ]
7-7-5 Error Code [5111-5178]
1. Error code definition
5111-5116
Temperature sensor fault (HBC) (TH11~TH16)
5132-5135
Temperature sensor fault (HBC) (TH32~TH35)
5141-5156
Temperature sensor fault (HBC) (TH31a~TH31p)
5161-5176
Temperature sensor fault (Sub-HBC) (TH31a~TH31p)
5177-5178
Temperature sensor fault (Sub-HBC) (TH32~TH33)
2. Error definition and error detection method
If a shorted (high temperature intake) or open (low temperature intake) thermistor (TH11 through TH16, TH32 through TH35,
TH31a through TH31p, TH31a through TH31p, TH32, or TH33) is detected during operation, the unit comes to an abnormal
stop, and an error code "5111" through "5116," "5132" through "5135," "5141" through "5156," "5161" through "5176," or "5177"
through "5178" appears on the display.
Detection of a short- or open-circuit as described above is suspended during the defrost cycle and for 3 minutes after the
operation mode is changed.
3. Cause, check method and remedy
(1) Thermistor failure
(2) Pinched lead wire
(3) Torn wire coating
(4) A pin on the male connector is missing or
contact failure
(5) Disconnected wire
(6) Thermistor input circuit failure on the control
board
(When an error is found with TH11-TH16 or
TH32-TH35)
(7) Thermistor input circuit failure on the VB
board
(when an error is found with TH31a-TH3p)
<Reference>
TH11
TH12
TH13
TH14
TH15
TH16
TH32~TH35
TH31a~TH31f
TH31a~TH31p (Sub-HBC)
TH32~TH33 (Sub-HBC)
52
- chapter 7
Cause
Short detection
110°C [230°F] and above (0.4kΩ)
110°C [230°F] and above (0.4kΩ)
110°C [230°F] and above (0.4kΩ)
110°C [230°F] and above (0.4kΩ)
110°C [230°F] and above (0.4kΩ)
110°C [230°F] and above (0.4kΩ)
110°C [230°F] and above (0.4kΩ)
110°C [230°F] and above (0.4kΩ)
110°C [230°F] and above (0.4kΩ)
110°C [230°F] and above (0.4kΩ)
Check method and remedy
Check thermistor resistance.
Check for pinched lead wire.
Check for wire coating.
Check connector.
Check for wire.
Check the intake temperature of the sensor with the LED
monitor.
When the temperature is far different from the actual tem-
perature, replace the control board.
Check the temperature sensor reading on the LED monitor.
If there is a large discrepancy between the temperature that
appears on the LED monitor and the actual temperature, re-
place the VB board.
Open detection
-40°C [-40°F] and below (130kΩ)
-40°C [-40°F] and below (130kΩ)
-40°C [-40°F] and below (130kΩ)
-40°C [-40°F] and below (130kΩ)
-40°C [-40°F] and below (130kΩ)
-40°C [-40°F] and below (130kΩ)
-40°C [-40°F] and below (130kΩ)
-40°C [-40°F] and below (130kΩ)
-40°C [-40°F] and below (130kΩ)
-40°C [-40°F] and below (130kΩ)
BS_07_M