HX Pool and Spa Heater
Page 6
DIGITAL THERMOSTAT OPERATION
DESCRIPTION
The sophisticated digital thermostat provides temperature read out, set point temperature and
operating status of the heater. The electronic display indicates the operational status of the heater
and any fault conditions.
TEMPERATURE DISPLAY
The temperature display indicates water temperature in the inlet of the heater. Therefore the pump
must be operating for an accurate pool or spa water temperature to be displayed.
Comfortable pool temperature is between 26
˚
C and 30
˚
C. Normal spa temperature is between
36
˚
C and 38
˚
C. To select your desired temperature press the up or down button repeatedly until
the desired temperature is reached.
To prevent rapid cycling of the heater, the thermostat has an inbuilt time delay which prevents the
heater from turning on for two minutes after the set point has been reached. If the time delay is
activated, the symbol “L” will be displayed. This is part of normal operation.
The thermostat can be set to temperatures between 10
˚
C and 40
˚
C. It also incorporates several
safety features including a 45
˚
C high limit function to prevent overheating of the pool or spa. On
simultaneous shut down of the circulating pump and heater, the water within the heater may
exceed 45
˚
C for a short period. If the pump and heater are restarted during this period, the
thermostat will go into a standby mode and prevent the heater from relighting until the
temperature within the heater has dropped below the set temperature.
Should the thermostat fail to stop the heater at the set point or at 40
˚
C, there are three temperature
limiting safety devices designed to lock the heater out and prevent further heating. A lock out
condition is indicated by the symbols F1 or F2. To reset a lock out condition, turn the power off
for five seconds.
>
<
HURLCON
HURLCON
○
I
ON/OFF POOL/SPA WARM COOL
