Multi-Zone Technical Overview

REFERENCES
PAGE 104
ENGLISH
FLOW CHARTS
Check the connector connection
Caution: Be sure to turn power o before connecting or disconnecting the connector, or parts
may sustain damage.
Check the connector connection
Correct the connection
Is it normal?
Thermistor resistance check
Is it normal?
Replace the thermistor
Replace the indoor unit PCB
NO
NO
YES
When the thermistor input is more than4.92V or less than 0.08V during compressor operation
YES
Thermistor resistance check method:
Remove the connector of the thermistor from the PCB and measure the resistance of the thermistor using an
ohmmeter. The relationship between normal temperature and resistance is shownin the indoor thermistor
chart located in the reference section.
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