2 Components
Service manual
41
EBLQ+EDLQ011~W1 + EBLQ+EDLQ011~0W1
+ EK(2)CB EKMB9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Prerequisite:
Remove the required plate work, see
.
Prerequisite:
Recuperate the refrigerant from the refrigerant circuit,
"3.2.2 Repair procedures" on page 93
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
a
Accumulator assembly pipe
3
To install the accumulator assembly, see
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
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
Is the problem solved?
Action
Yes
No further actions required.
No
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
.
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 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 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.