Daikin Altherma 3 M - Page 255

3 | Components
Service manual
255
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
To perform an electrical check of the specific thermistor
1 First perform a mechanical check of the thermistor, see "Checking
procedures"[4254].
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)
Referen
ce
(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
Inlet water
thermistor
R4T Hydro X8A: 1‑2 – A
Domestic
hot water
tank
thermistor
(ONLY with
optional
domestic
hot water
tank
installed)
R5T Hydro X9A: 1‑2 – For
domest
ic hot
water
tank
EKHWP
: A
For
domest
ic hot
water
tank
EKHWS
or third
party
domest
ic hot
water
tank: B