Daikin ALTHERMA HT EKBUHAA6 V3, Service Manual

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External Backup Heater Kit ESIE09-08A
262 Appendix
6.4 Detailed Explanation of Setting Modes
To activate the heater kit some field settings on the indoor unit need to be changed. For details how to
change field settings refer to the chapter "Field settings" of the indoor unit installation or operation
manual.
Detailed
description

[6-02] Heater kit
Once installed, you can activate the heater kit by changing field setting [6-02]=1. From that moment
on, the heat pump system will take the heater kit into account whilst deciding operation. When the
heater is actually operating, the heater symbol
(
is shown on the remote controller. There is no step
1-2 indication.
Use of backup heater with EKHBRD*AA*
(*) Auxilary relay (following heat pump tariff signal) can be applied to switch off BUH during HP
tariff operation
Use of backup heater with EKHBRD*AB*/EKHVMY(R)D*AA*
(*) Auxilary relay (following heat pump tariff signal) can be applied to switch off BUH during HP
tariff operation
Note Setting [8-01]:
Not for EKHBRD*AA*: was used to set auto restart on or off. This has been changed to default on.

[8-02] Emergency operation
During emergency mode, heating is only done by the heater kit, not by the heat pump. Activation of
emergency mode is done by changing field setting [8-02]=1. Activating the emergency mode will
stop the heat pump operation. The pump of the indoor unit will be started, but heating itself is done by
the heater kit. If there are no error conditions in leaving or returning water thermistors, the heater kit
can start to follow emergency operation.
Note Before activating emergency operation, be sure to activate the heater kit. The heater will stay in
emergency mode until the field setting is set back to default [8-02]=0.

Benefit kWh rate power supply mode
Note This concerns the benefit kWh rate power supply mode of the EKHBRD/EKHVM indoor unit. For
more details, refer to the "Field settings" chapter of the indoor unit installation manual.
If the benefit kWh rate power supply is used for the indoor unit, the indoor unit will go into
emergency operation automatically when the power supply is interrupted.
[6-02]=0 [6-02]=1
Normal heat pump operation BUH assistance possible NO YES
During heat pump tariff BUH operation NO YES (*)
Heat pump operation NO NO
Ta < -25°C Automatic switch over to BUH
operation
NO NO
[6-02]=0 [6-02]=1
[8-01]=0 [8-01]=1 [8-01]=0 [8-01]=1
Normal heat pump
operation BUH assistance possible NO NO YES YES
During heat pump
tariff BUH operation NO NO NO YES
Heat pump operation NO NO NO NO
Ta < -25°C Automatic switch over
to BUH operation
NO NO NO YES
(*)