H1-00 - External Temperature Sensor Problem - Daikin altherma 3 M Service Manual

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2.3.41 H1-00 – External temperature sensor problem
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check of the main PCB. See
Possible cause: Faulty main PCB.
2 Perform a check of the noise filter PCB. See
Possible cause: Faulty noise filter PCB.
3 Check if the power supply is conform with the regulations. See
4
circuit" [
 284].
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance >4%),
▪ Power drop,
▪ Short circuit.
Prerequisite: Stop the unit operation via the user interface.
4 Turn OFF the respective circuit breaker.
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10  V  DC before proceeding, see
electrical
hazards" [
5 Check that the thermal interface grease is applied properly on the (PCB or
refrigerant piping) contact surface of the heat sink. Adjust if needed.
Possible cause: Thermal interface grease NOT applied properly on the heat
sink.
INFORMATION
Make sure to use thermal interface grease Shin Etsu G-776 (spare part number
2269571).
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Optional external indoor
or outdoor ambient
thermistor input is out of
range.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
"3.14 Main
"3.15 Noise filter
4
 285].
Effect
Unit will NOT stop
operating.
2
Troubleshooting
|
4
PCB" [
 171].
4
PCB" [
 194].
"4.1 Electrical
"To prevent
Reset
Automatic reset when
input is in range.
Service manual
41

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