Thermistors; Refrigerant Thermistors - Daikin Altherma EBLQ011CAV3 Service Manual

2 Components
d b
a Screw
b Solenoid valve coil
c Bracket
d Screw
e Solenoid valve body
2 Install and tighten the screw to fix the solenoid valve coil to the
solenoid valve body.
3 Install and tighten the screw to fix the solenoid valve to the
bracket.
4 Route the solenoid valve harness towards the switch box.
5 Connect the solenoid valve connector to the main PCB.
WARNING
When reconnecting a connector to the PCB, do NOT apply
force, as this may damage the connector or connector pins
of the PCB.
6 Fix the solenoid valve harness using new tie straps.
INFORMATION
Replace all cable ties that were cut during removal.
Is the problem solved?
Yes
No
2.23

Thermistors

NOTICE
Select the correct type.
2.23.1

Refrigerant 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: Turn OFF the unit via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
work" on page 77.
Service manual
82
a c e
Action
No further actions required.
Return to the troubleshooting of
the specific error and continue
with the next procedure.
"2.19 Plate
1 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 or
ambient.
Is the thermistor correctly
installed (thermal contact
between the thermistor and the
piping)?
Yes
No
To perform an electrical check of the specific thermistor
Prerequisite: First perform a mechanical check of the thermistor,
see "Checking procedures" on page 82.
1 Locate the thermistor.
INFORMATION
Remove the thermistor from its holder if not reachable with
a contact thermometer.
2 Measure the temperature using a contact thermometer.
Name Symbol Location
(PCB)
Air R1T Main
thermistor
Discharge R2T Main
pipe
thermistor
Refrigerant R3T Main
liquid
thermistor
Suction R3T Main
thermistor
Heat R4T Main
exchanger
thermistor
Heat R5T Main
exchanger
(middle)
thermistor
Liquid R6T Main
thermistor
Fin R7T Inverter
thermistor
(only for
three phase
units)
Fin R10T Inverter
thermistor
(only for
single phase
units)
INFORMATION
The thermistors may vary according to the specific unit.
3 Determine the thermistor resistance that matches the measured
temperature.
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Action
Perform an electrical check of the
specific thermistor, see
"Checking procedures" on
page 82.
Correctly install the thermistor,
see "Repair procedures" on
page 83.
Connector Type
(pins)
X11:1‑2 1
X12:5‑6 1
X7A: 1‑2 1
X12: 3‑4 1
X12: 5‑6 1
X12: 7‑8 1
X13: 1‑2 1
X111A: 1‑2 1
X111A: 1‑2 1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02