28
6a)
SWITCHING ON THE CONTROL
(Units with mP20 control only)
Connect the power supply to the auxiliary circuit of the unit electrical panel (IM8); the control is
activated as follows:
- the yellow power LED on the circuit board switches on (see Layout of circuit board);
- there is a short acoustic signal;
- the display shows the start-up screen for 10 seconds, then goes to unit stopped status;
When the unit is
connected
to the power supply but
not operating
, 3 fields are active on the
terminal display:
- Current time and date (if clock circuit it is fitted);
- Water return temperature and (in free-cooling units only) external temperature;
- Indication of unit switched off by: ON/OFF switch, supervision system, time program, manual
override.
TO TURN ON
the unit press the
button on the control; close the remote On/Off switch (if
fitted).
CHECK
that no red alarm LED is on. In the event that a red LED does come on, refer to the section
on Troubleshooting and to the mP20 microprocessor control instruction manual.
Use the local terminal to turn the unit off so that the pump stops at least 10 seconds after the chiller:
this prevents the unit from stopping when there is no water flow.
6b)
SWITCHING ON THE BASIC CONTROL
Connect the power supply to the auxiliary circuit of the unit electrical panel (IM8); the control is
activated as follows:
- the display shows the water temperature detected by the intake sensor;
- the “
Comp
”, “
Heat
” or “
Cool
”
LEDs switch on to indicate compressor function and function
mode (cooling or heating).
- if there is an alarm code (“
E
...”) refer to the microprocessor control instruction manual
If a remote user terminal is fitted, the
and
buttons are de-activated; see point 2 for
summer/winter changeover
.
Use the local terminal to turn the unit off so that the pump stops at least 10 seconds after the chiller:
this prevents the unit from stopping when there is no water flow.
Any damage caused by failure to follow these instructions is
not covered by the terms of the guarantee.
WATER IN TEMP.
. . . . . °C
WATER OUT TEMP. . . . . . °C
UNIT OFF
Summary of Contents for Aquaflair 00182
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