If A Sensor Is Defective - Technibel GR360M3R5TAA Technical Data & Service Manual

10-5. If a sensor is defective.

10-5-1.Indoor coil / room temperature thermistor is defective.
• Stand-by lamp on front side of
indoor unit is flashing on and off.
10-5-2.Outdoor coil / outdoor air temperature thermistor is defective.
• Status led (RED) on outdoor PCB
blinks 5 times then off (repeat)
NOTE
Definition of Open or Short Circuit of Sensor (Thermistor)
Open... A lead wire is broken or disconnected or the circuit inside the temperature sensor is open .
Short... The protective cover of a lead wire has been damaged, and the exposed wire is touching another metal
part, or both lead wires have become exposed and are touching each other. Alternatively, the circuit inside
the temperature sensor is closed.
YES
YES
46
• At least one of the thermistors is
defective (that is, SHORT or OPEN.)
• Replace thermistor(s).
• At least one of the thermistors is
defective (that is, SHORT or OPEN.)
• Replace thermistor(s).
Temperature
sensor
Thermistor Structure
Lead
wires