2 Components
Service manual
45
EBLQ+EDLQ011~W1 + EBLQ+EDLQ011~0W1
+ EK(2)CB EKMB9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Prerequisite:
Turn off the respective circuit breaker of the unit and
the backup heater.
Prerequisite:
Remove the required plate work, see
.
1
Disconnect the wiring from the backup heater contactor
terminals.
2
Remove the screws and remove the backup heater contactors
from the switch box.
3
To install the backup heater contactors, see
To install the backup heater contactors
1
Install the backup heater contactors in the switch box and fix
them using the screws.
2
Connect the wiring to the correct backup heater contactor
terminals.
Is the problem solved?
Action
Yes
No further actions required.
No
of the
backup heater and continue with
the next procedure.
2.4.2
Backup heater kit
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.
Prerequisite:
Check the circuit breaker. Reset if it has tripped.
Prerequisite:
Check the backup heater thermal protector. Reset if it
"2.5 Backup heater thermal protector" on page 48
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?
Action
Yes
Replace the backup heater, see
No
of the
backup heater and continue with
the next procedure.
To perform a check of the backup heater contactors
1
First perform an electrical check of the backup heater, see
"Checking procedures" on page 45
.
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.
a
a
a
a
Backup heater contactor
Are the measured voltages of
the backup heater contactors
correct?
Action
Yes
of the
backup heater and continue with
the next procedure.
No
Replace the specific backup
heater contactor(s), see
.
To perform an insulation check of the backup heater
1
First perform a check of the backup heater contactors, see
"Checking procedures" on page 45
.
2
Open all circuit breakers.
CAUTION
To prevent damage to the unit, all fuses MUST be opened
before using a Megger.
