Details; Operation Of The Dhw System; Selecting Cooling Mode; Pilot Wire* (If Kit Regulation Extension Avs 55) - Fujitsu Waterstage DHW Series Operating Instructions Manual

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Details

If the electrical power supply has been cut off while
the heat pump is operating (electrical power failure or
unprogrammed pressing of the on/off switch on the
hydraulic unit) the display will show error 370 when
the appliance restarts . Do not be concerned, the
communication between the outdoor and hydraulic unit
will re-establish itself in a few moments .
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Operation of the DHW system*

The key enables you to switch the DHW (domestic hot
water) mode on and off. The selection is shown by a
bar, which appears under the corresponding symbol .
Manual activation: Hold down the DHW key for 3 seconds
(Switch from "reduced" to "nominal" until the next time
the DHW timer switches over) .
To ensure a DHW setting over 45°C, the electrical back-
up heating or the boiler must be left on .
In order to optimise operation of the DHW, it is possible to:
- Program the timer settings (parameters 560 to 576),
- Adjust the comfort temperature set point (parameter 1610),
- Adjust the reduced temperature set point (parameter 1612) .
Press the info key to obtain the details on the DHW
(temperature setting operation) .
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Selecting cooling mode*

If the installation is fitted with the cooling kit.
The key activates and deactivates cooling mode .
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Pilot wire* (if kit regulation
extension AVS 55)
It's possible to order up to 15 electric heaters via output
"pilot wire" .
The "pilot wire" handles only the hourly operation
of electric heaters (comfort mode / reduced mode
commutation and Frost protection mode) .
The comfort temperature setting should be done
directly on the electric heater(s) . The "pilot wire" does
not handle the temperature of the electric heaters .
Refer to the manual supplied with the electric heater(s) .
Put the electric heaters on "PROG" mode or "AUTO"
mode for piloting by the regulation board .
The difference between the comfort temperature and
the reduced temperature is from 3 .5°C .
Frost protection temperature is set directly on the
electric heaters . Refer to the manual supplied with the
electric heater(s) .
In the absence of signal, electric heaters operating in
comfort mode .
* depending on configuration / option
- 18 -
fig. 8 - Select the DHW mode
Brief
press
fig. 9 - Information key
fig. 10 - Selecting cooling mode
fig. 11 - Selecting the frost protection
Waterstage / OPERATING INSTRUCTIONS / 2010 - EN
Details of any error
Operating values
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