Daikin VRV – Symptoms with Thermistor Resistance Deviation

In Cooling with Superheat Degree Control

• Indoor unit liquid pipe thermistor
· When the resistance deviates to smaller value.
(Higher temperature detected)

1 29 Daikin VRV   Symptoms with Thermistor Resistance Deviation

· When the resistance deviates to larger value.
(Lower temperature detected)

1 30 Daikin VRV   Symptoms with Thermistor Resistance Deviation

• Indoor gas pipe thermistor
· When the resistance deviates to smaller value.
(Higher temperature detected)

1 31 Daikin VRV   Symptoms with Thermistor Resistance Deviation

· When the resistance deviates to larger value.
(Lower temperature detected)

1 32 Daikin VRV   Symptoms with Thermistor Resistance Deviation

Code of Thermistors Detecting Various Temperatures

1 33 Daikin VRV   Symptoms with Thermistor Resistance Deviation

In Heating with Subcooled Degree Control

• Indoor unit liquid pipe thermistor
· When the resistance deviates to smaller value.
(Higher temperature detected)

1 34 Daikin VRV   Symptoms with Thermistor Resistance Deviation

· When the resistance deviates to larger value.
(Lower temperature detected)

1 35 Daikin VRV   Symptoms with Thermistor Resistance Deviation

In ON / OFF Judgment for Heating Hot Start

• Indoor unit liquid pipe thermistor
· When the resistance deviates to larger value.
(Lower temperature detected)

1 36 Daikin VRV   Symptoms with Thermistor Resistance Deviation

Tc: Equivalent saturation temperature of detected value of outdoor high pressure sensor (Pc)
Tl: Detected temperature of indoor liquid pipe thermistor
(Th2 for units using R22 or R407C, R2T for units using R410A)

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