Backup Heater; Built-In Backup Heater - Daikin Altherma EBLQ011CAV3 Service Manual

Prerequisite: Remove the required plate work, see
work" on page 77.
Prerequisite: Recuperate the refrigerant from the refrigerant circuit,
see "3.2.2 Repair procedures" on
1 If needed, remove any parts to create more space for the
removal of the accumulator assembly.
2 Cut the accumulator assembly pipes below the soldered joint
using a pipe cutter.
a Accumulator assembly pipe
3 To install the accumulator assembly, see
procedures" on page 40.
To install the accumulator assembly
1 Install the accumulator assembly in the correct location of the
unit.
2 Wrap a wet rag around the accumulator assembly pipes and
solder the accumulator assembly pipes to the refrigerant pipes.
a Accumulator assembly pipe
CAUTION
Overheating the accumulator assembly pipes (and the oil
inside the pipes) will damage or destroy the accumulator
assembly.
3 Add refrigerant to the refrigerant circuit, see
procedures" on page 93.
Is the problem solved?
Yes
No
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
"2.19 Plate
page 93.
a
"2.3.2 Repair
a
"3.2.2 Repair
Action
No further actions required.
Return to the troubleshooting of
the specific error and continue
with the next procedure.
2.4

Backup heater

NOTICE
Select the correct type.
2.4.1

Built-in backup heater

Checking procedures
INFORMATION
It is recommended to perform the checks in the listed
order.
To perform an electrical check of the backup heater
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.
Prerequisite: Check the circuit breaker. Reset if it has tripped.
Prerequisite: Check the backup heater thermal protector. Reset if it
has tripped. See "2.5 Backup heater thermal protector" on
1 Turn ON the power of the unit.
INFORMATION
If the circuit breaker or the backup heater thermal protector
trips again, determine the root cause of the problem.
Something is overloading the electrical circuit or creating a
short-circuit.
2 Activate Installer on the user interface. See the installer
reference guide for the correct procedure.
3 Go to Actuator test run via the user interface.
4 Activate backup heater: step 1.
5 Activate backup heater: step 2.
6 Check the status in the Actuators menu of the user interface.
This MUST be:
▪ Backup heater: step 1 = ON
And/Or
▪ Backup heater: step 2 = ON
7 Check if the field installed circuit breaker has tripped.
8 Check if the fuse of the backup heater has tripped.
Did the fuse or the field
supplied circuit breaker of the
backup heater trip?
Yes
No
To perform a check of the backup heater contactors
1 First perform an electrical check of the backup heater, see
"Checking procedures" on page 41.
2 With the Actuator test run still active, measure the voltage
between the terminals before, on and after each contactor. The
voltage measurements before, on and after each contactor
MUST be the same.
2 Components
"2.19 Plate
page 48.
Action
Replace the backup heater, see
"Repair procedures" on
page 42.
Return to "Checking
procedures" on page 41 of the
backup heater and continue with
the next procedure.
Service manual
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