York YEFE BZSM-MOW1 Series, Service Manual

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Tr
oubleshooting
 Page 92 
5.2 E2/E3/E4 for ceiling&floor type and super slim cassette type&E4/E5/F2 for A6 duct
type (Open circuit or short circuit of temperature sensor diagnosis and solution)
Description : If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure.
Recommended parts to prepare:
• Wiring mistake
• Faulty sensor
• Faulty PCB
Troubleshooting and repair:
C heck the connection betw een
tem perature sensor and PC B .
Replace the indoor PC B or the
outdoor electronic control box .
Is it w ithin acceptable
param eters?
Is it properly w ired ? Ensure proper connections . N O
M easure the resistance value
of the sensor .
Y ES
Replace the Sensor . N O
Y ES