Horizon Yacht Charters FP Lucia 40 2020 Information & Operation Manual page 14

Aux Heat: The electric heating system is in operation. If the ambient
temperature rises above the set point, the system will not automatically
switch to COOL mode.
Air Conditioning Fault Codes:
ASF: Air Sensor Failure
FIL: Filter, indicates the filter needs to be cleaned or replaced.
HPF: High Pressure Fault, indicates high refrigerant pressure. The fault is not
applicable in HEAT mode. Can also mean there is air in the lines and reducing your raw
water flow, you will have to bleed the system if this is the case.
LAC: Low AC Voltage
LPF: Low Pressure Fault indicates low refrigerant pressure. The fault has a 10 min shut
down delay.
PLF: Pump Sentry Fault, indicates high-water temperature in the condensing coil.
AC troubleshooting:
Iced up unit: You can tell a unit is iced up when it is running but there is no air
coming out of the AC vent. You can also look at the actual unit, it will be covered in
ice. Turn off the unit and let defrost. You can also move the mode from cooling to heat
for about 5 to 10 mins until you feel air coming out the vent again.
Unit not cooling: Check temperature settings. Ensure mode is set to cool.
HPF (Hight pressure fault): The AC units on the Altair are water cooled. A high-
pressure fault means that there is air in the system (lack of water flow). Check the
sides of the vessel and make sure water is coming out of the AC outlets on the hull. If
there is no raw water flow the unit will need bleeding.
Automatic modes: Switches to cooling or heating as required to
satisfy the temperature set-point. When Automatic mode is
selected the system provides both heating and cooling, as
required.