Astralpool 175 - DISPLAY SYMBOL INDICATION

INST 318 HINRG HEATER – V01-18
- 6 -
DISPLAY SYMBOL INDICATION
Under fault conditions the thermostat will display a set of alpha numeric symbols to indicate the status of the heater. The meaning
of each symbol and action to be taken are listed as follows:
SYMBOL
MEANING
ACTION
Temp Display
Unit has power
No Action
F0
Heater locked off, thermistor wire
disconnected or water at 0°C (freeze
conditions).
If water temperature reads greater
than 0°C, phone for service.
F1
Thermostat reads greater than 45°C.
Allow water to cool below 40°C, turn
heater off then on again.
F2
Mechanical Hi Limit greater than
43°C or 52°C and/or
Low water flow
Allow water to cool below 30°C, turn
heater off then on again.
Make sure water is flowing through
heater.
F3
Thermistor Fault.
Phone for service.
L
Heater locked out on time delay for 2
minutes.
No Action. Heater will automatically
reset after the time delay.
Pump operating and sufficient water
pressure to operate heater.
No Action.
Thermostat calling for heat.
Electronic Flame Supervision
operating.
No Action.
Burner Operating
No Action