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4
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Components
Service manual
223
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
4.19.2 Water side thermistors
Checking procedures
INFORMATION
It is recommended to perform the checks in the listed order.
To perform a mechanical check of the specific thermistor
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
1
Remove the required plate work, see
2
Locate the thermistor and remove the insulation if needed. Check that the
thermistor is correctly installed and that there is thermal contact between the
thermistor and the piping.
Is the thermistor correctly installed?
Action
Yes
Perform an electrical check of the
specific thermistor, see
223].
No
Correctly install the thermistor, see
To perform an electrical check of the specific thermistor
1
First perform a mechanical check of the thermistor, see
223].
2
Locate the thermistor.
INFORMATION
Remove the thermistor from its holder if not reachable with a contact thermometer.
3
Measure the temperature using a contact thermometer.
Name
Symbol Location
(PCB)
Connector
(pins)
Inter-
mediate
terminal
(wires)
Reference
(table)
Outlet water
after plate
type heat
exchanger
thermistor
R1T
Hydro
X5A: 1‑2
–
A
Outlet water
after backup
heater
thermistor
R2T
Hydro
X6A: 1‑2
For units
with built‑in
backup
heater: -
A
For units
with backup
heater kit:
▪
X5M: 1‑2
▪
X15M: 1‑2
A
draft – 31/05/2022 15:53
Summary of Contents for EBLA04E V Series
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