Defrost Cycle Subzero; To Select Pool Or Spa Mode; Automatic Pool Or Spa Mode And Remote Control - Waterco Electroheat SubZero Supplementary User And Care Manual Manual

I pg 05
Heat Pump Swimming Pool Heaters

Defrost Cycle SubZero

The interval time between the defrost cycle depends on the temperature of the ambient air
and of the humidity. During the defrost cycle, the ventilator stops functioning and the hot
refrigerant is injected into the evaporator in order to melt the frost. The defrost cycle last from
3 to 4 minutes.
If the heat pump carries out 5 consecutive short heating cycles (i.e. defrost cycles at every
15 minutes or less), the heat pump is then put into protection mode. These short cycles
mean that the conditions of the temperature and humidity do not make it possible to heat the
swimming pool. The heat pump is put into protection mode in order to preserve the consumer
of a non-effective use of electrical energy. In protection mode, the digital will display FS4.
FS4: During the protection mode, the ventilator turns ON for 30 minutes in order to cool the
evaporator. The heat pump restarts automatically when the external temperature is of 15°C.
Press any key to restart the unit.

To Select Pool or Spa Mode

The electronic board has the capability of memorizing two different programmed temperature
settings as follows:
For a pool maximum 35˚C
For a spa maximum 40˚C
To have access to either one of these programs, press the SET key until you see P-S and,
then pressing the UP or DOWN key; you can switch to POL or SPA. Once the heating mode
is programmed, it will be displayed for approximately 5 seconds, then the digital display will
return to the actual pool water temperature. The light on the right side of the display indicates
the chosen heating mode (See touch pad description on previous page).

Automatic Pool or Spa Mode and Remote Control

The digital control has the possibility to switch from Pool to Spa mode automatically using an
external water pressure switch connected to the Spa water line or a remote control. See the
general user handbook for installation instruction. For remote control operation, you will need
to set the Spa temperature to maximum 40°C and the Pool setting to ''OFF'' so that when the
remote control calls for heat it will activate the Spa mode and start the heater.
Contact us for more details on this feature.