Daikin Emura RXJ20A5V1B Service Manual page 170

4 | Components
To perform an electrical check of the specific thermistor
Service manual
170
1 Locate the thermistor and remove the insulation if needed. Check that the
thermistor is correctly installed and that there is thermal contact between the
thermistor and the piping or ambient (for air thermistor).
Is the thermistor correctly installed
(thermal contact between the
thermistor and the piping)?
Yes
No
1 First perform a mechanical check of the thermistor, see
4
procedures" [ 169].
2 Locate the thermistor.
INFORMATION
Remove the thermistor from its holder if not reachable with a contact thermometer.
3 Measure the temperature using a contact thermometer.
Outdoor units
Name Symbol
Air R1T
thermistor
Heat R2T
exchanger
thermistor
Discharge R3T
pipe
thermistor
Indoor units
Name Symbol
Heat R1T
exchanger
thermistor
Indoor unit S1T
air (room)
thermistor
Action
Perform an electrical check of the
specific thermistor, see
"4.19.1 Checking
Correctly install the thermistor, see
"4.19.2 Repair
Location Connector
(PCB) (pins)
Main (O/U) S90:1‑2
Main (O/U) S90:3‑4
Main (O/U) S90:5‑6
Location Connector
(PCB) (pins)
Main (I/U) S501:1‑2
Humidity S600:1‑2
sensor PCB
A5P on
main PCB (I/
U)
4
procedures" [ 169].
4
procedures" [ 173].
"4.19.1 Checking
Inter- Referen
mediate ce
connector (table)
(pins)
- A
- A
- A
Inter- Referen
mediate ce
connector (table)
(pins)
- A
CN1:1‑2 (on A
A5P)
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04B – 2022.08