Daikin Altherma EHVH04S18CB3V - Page 70

8 Configuration
Installer reference guide
70
ERLQ004~008CA + EHVH/X04+08S18+26CB
Daikin Altherma – Low temperature split
4P384973-1A – 2016.02
Forced defrost
You can manually start a defrost operation.
The decision to execute the manual defrost operation is made by the
outdoor unit and depends on ambient and heat exchanger
conditions. When the outdoor unit accepted the forced defrost
operation, will be displayed on the user interface. If is NOT
displayed within 6 minutes after forced defrost operation was
enabled, the outdoor unit ignored the forced defrost request.
# Code Description
[A.6.6] N/A Do you want to start a defrost operation?
Pump operation
When the pump operation function is disabled the pump will stop if
the outdoor temperature is higher than the value set by [4‑02] or if
the outdoor temperature drops below the value set by [F‑01]. When
the pump operation is enabled, the pump operation is possible at all
outdoor temperatures.
# Code Description
N/A [F‑00] Pump operation:
▪ 0: Disabled if outdoor temperature is
higher than [4‑02] or lower than [F‑01]
depending on heating/cooling
operation mode.
▪ 1: Possible at all outdoor
temperatures.
Pump operation during flow abnormality [F‑09] defines whether the
pump stops at flow abnormality or allow to continue operation when
flow abnormality occurs. This functionality is only valid in specific
conditions where it is preferable to keep the pump active when
T
a
<4°C (pump will be activated for 10 minutes and deactivated after
10 minutes). Daikin shall NOT be held liable for any damage
resulting this functionality.
# Code Description
N/A [F‑09] Pump continue operation when flow
abnormality:
▪ 0: Pump will be deactivated.
▪ 1: Pump will be activated when
T
a
<4°C (10 minutes ON – 10 minutes
OFF)
Pump speed limitation
Pump speed limitation [9‑0D] defines the maximum pump speed. In
normal conditions, the default setting should NOT be modified. The
pump speed limitation will be overruled when the flow rate is in the
range of the minimum flow (error 7H).
# Code Description
N/A [9‑0D] Pump speed limitation
▪ 0: No limitation.
▪ 1~4: General limitation. There is
limitation in all conditions. The
required delta T control and comfort
are NOT guaranteed.
▪ 5~8 (default: 6): Limitation when no
actuators. When there is no heating/
cooling output, the pump speed
limitation is applicable. When there is
heating/cooling output, the pump
speed is only determined by delta T in
relation to the required capacity. With
this limitation range, delta T is
possible and the comfort is
guaranteed.
The maximum values depend on the unit type:
[9-0D]=0 [9-0D]=5
a (kPa)
b (l/min)
a (kPa)
b (l/min)
a (kPa)
b (l/min)
a (kPa)
b (l/min)
[9-0D]=6 [9-0D]=7
[9-0D]=8
a (kPa)
b (l/min)
a External static pressure
b Water flow rate