ESIE16-03B
|
Part 2. Troubleshooting
2.4. Component checklist
22/08/16
|
Version 1.1
Page 57
SA R32 Sky-Air RZAG-L
2.4.2.8. Refrigerant thermistors
1. Switch off the Daikin unit via the user interface.
2. Switch off the Daikin unit with the field supplied circuit breaker.
3. Locate the thermistor and check if thermal contact with the piping or ambient is ensured.
1. Switch off the Daikin unit via the user interface.
2. Switch off the Daikin unit with the field supplied circuit breaker.
3. Remove plate work when required.
4. From the table in the appendix (
"Component checklist" on page 121
), select the thermistor that must be checked.
5. Measure the temperature of the thermistor using a contact thermometer.
6. Unplug the connector from the appropriate PCB and measure the resistance between the pins listed in the table in the
appendix (
"Component checklist" on page 121
).
-
Compare the measured resistance with the range determined by the lower and higher temperature.
7. If the measured resistance does not match the listed value, the thermistor must be replaced.
E.g. R3T air thermistor - main PCB - connector S90: pin 1-2 type 1:
•
Measured temperature with contact thermometer: 23.1°C.
•
Unplug the sensor and measure the resistance between S90: 1-2: 21.86 k
Ω
.
•
The resistance values are defined by below table
"Thermistor resistance / temperature characteristics (type 1)"
:
-
Resistance at 23°C: 21.85 k
Ω
.
-
Resistance at 24°C: 20.90 k
Ω
.
Technical specification
Description
A single type of thermistor is used; the resistance vs. tempera-
ture characteristics is shown in below table "Thermistor resist-
ance / temperature characteristics (type 1)".
The thermistors are used to measure the temperature at multiple
locations inside the Daikin unit. The measured temperatures are
processed by the main board.
Location
Piping diagram
Wiring diagram
Switch box
Component overview of unit
See
"Outdoor unit" on
page 117
.
See
"Outdoor unit" on
page 115
.
See
"Outdoor unit" on
page 122
.
See
"Outdoor unit" on page 119
.
Check procedure
Mechanical check
Electrical check
I
NFORMATION
If a thermistor check fails, replace the thermistor.
W
ARNING
: R
ISK
OF
F
IRE
When reconnecting a connector to the PCB, do not apply force, as this may damage the connector or connector pins of
the PCB.
I
NFORMATION
All thermistors have a tolerance of 5%.
Содержание SA R32 Sky-Air RZAG-L
Страница 14: ...ESIE16 03B Part 1 Introduction 1 4 How to use Page 14 22 08 16 Version 1 1 SA R32 Sky Air RZAG L...
Страница 60: ...ESIE16 03B Part 2 Troubleshooting 2 5 Other capacity range Page 60 22 08 16 Version 1 1 SA R32 Sky Air RZAG L...
Страница 94: ...ESIE16 03B Part 3 Repair 3 3 Unit specific repair procedures Page 94 22 08 16 Version 1 1 SA R32 Sky Air RZAG L...
Страница 98: ...ESIE16 03B Part 5 Appendix Page 98 22 08 16 Version 1 1 SA R32 Sky Air RZAG L...