Malfunction Of Discharge Pipe Temperature Sensor System - Daikin Skyair FHC35K Service Manual

Si-71A
6.17

Malfunction of Discharge Pipe Temperature Sensor System

-6 -6 -6 -6
Remote Controller
Display
Outdoor Unit LED
A(H1P)
Display
Applicable Models
R(Y)
Malfunction
Case where the discharge pipe temperature sensor has a short or open circuit
Decision
Conditions
„ Failure of discharge pipe temperature sensor
Supposed Causes
„ Failure of discharge pipe temperature sensor's connector connection
„ Failure of outdoor unit PC board
Troubleshooting
Note: Measure the resistance while referring to the thermistor temperature and resistance conversion table.
Thermistor temperature and resistance conversion table.
Temperature
Troubleshooting
ñ ò ò
1(H2P) 2(H3P)
Disconnect the
discharge pipe
temperature
sensor(R3T) from
X6A on the outdoor
unit PC board and
measure the
resistance.
Is
the thermistor
normal?
(See note)
YES
Discharge pipe sensor(kΩ)
-6.0 866.8
-4.0 782.7
-2.0 707.6
0.0 640.4
2.0 579.9
4.0 525.6
6.0 477.0
8.0 433.4
10.0 394.2
12.0 358.9
14.0 327.1
16.0 298.5
18.0 272.6
20.0 249.2
22.0 228.1
24.0 208.9
26.0 191.5
Troubleshooting by Remote Controller Display / LED Display
NO
Temperature
28.0
30.0
32.0
34.0
36.0
38.0
40.0
42.0
44.0
46.0
48.0
50.0
52.0
54.0
56.0
58.0
Dischange pipe
temperature sensor
rep;acement
If contact is OK,
replace outdoor unit
PC board.
(SF019)
Discharge pipe sensor(kΩ)
175.8
161.5
148.4
136.6
125.8
115.3
106.5
98.8
91.3
84.4
78.1
72.3
67.1
62.2
57.8
53.7
115