Daikin VRV IV+ Service Manual page 350

3 | Components
Service manual
350
Name Symbol
Compressor R15T
(M1C for
REMQ5U +
REYQ8~12U,
M2C for
REYQ18+20U)
Body
Thermistor
Compressor R21T
M1C Discharge
Thermistor
Compressor R22T
M2C discharge
thermistor
4 Determine the thermistor resistance that matches the measured
temperature.
Type 1 thermistor
T °C kΩ T °C
–20 197.81 10
–19 186.53 11
–18 175.97 12
–17 166.07 13
–16 156.80 14
–15 148.10 15
–14 139.94 16
–13 132.28 17
–12 125.09 18
–11 118.34 19
–10 111.99 20
Location (PCB) Connector
(pins)
Main X19A: 5-6
Main X19A:1-2
Main X19A:3‑4
kΩ T °C kΩ
39.96 40 10.63
38.08 41 10.21
36.30 42 9.81
34.62 43 9.42
33.02 44 9.06
31.50 45 8.71
30.06 46 8.37
28.70 47 8.05
27.41 48 7.75
26.18 49 7.46
25.01 50 7.18
Type
2
2
2
T °C kΩ
70 3.44
71 3.32
72 3.21
73 3.11
74 3.01
75 2.91
76 2.82
77 2.72
78 2.64
79 2.55
80 2.47
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05