Daikin Modular L Smart Service Manual page 34

ESIE19-06 | Part 2. Troubleshooting
Item Ref Description
1 X27A AC power
2 X35A DC power
3 X70A Communication
inverter PCB
4 X22A, Damper motor
X28A
5 X5A, Limit switch
X6A
6 X12A R1T air return ther-
mistor
7 X11A R2T air intake ther-
mistor
8 F1U Fuse 6,3 A (slow)
9 F1S, Varistor
F2S
10 DSA1 Surge arrestor
11 HAP Green LED
Page 34
Modular L Smart
Item Reference PCB
1 X27A
2 X35A
3 X70A
4 X22A, X28A
5 X5A, X6A
6 X12A
7 X11A
8 F1U
9 F1S, F2S
10 DSA1
11 HAP
Signal
230 VAC
16 VDC
0~10 VDC
230 VAC
16 VDC
0~5 VDC
0~5 VDC
0 Ω
∞
∞
Blinks ±1/second
Description
AC power
DC power
Communication inverter PCB
Damper motor
Limit switch
R1T air return thermistor
R2T air intake thermistor
Fuse 6,3 A (slow)
Varistor
Surge arrestor
Green LED
Method Remark
permanent
permanent
+
-
fluctuating
+
-
When damper changes position
When open status (at bypass & heat-exchange)
+ - + -
depends on temperature
- +
depends on temperature
- +
No damage
No crack
No crack
2.4. Component checklist
21/01/20 | Version 1.1