Daikin EBLA04E V Series Service Manual page 127

To perform a check of the backup heater contactors
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
Prerequisite: Check that the backup heater thermal protector functions correctly.
Reset if it has tripped. See
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
1 First perform an electrical check of the backup heater, see
4
procedures" [ 125].
"4.4 Backup heater thermal
Action
Replace the backup heater, see
procedures" [
Return to
procedures" [
heater and continue with the next
procedure.
draft – 31/05/2022 15:53
4 | Components
4
protector" [ 134].
"Repair
4
130].
"Checking
4
125] of the backup
"Checking
Service manual
127