Smart Touch Cabin Control Installation & Operations Manual
TROUBLESHOOTING
L-3380 ENGLISH
31
“Air Sensor Failure” is
displayed.
1. Indicates failed face plate air sensor,
alternate air sensor or display cable.
2. Damaged jack/socket in display head or on
circuit board.
1. Unplug alternate air sensor if installed or
plug in alternate air sensor if not installed.
Try another display cable.
2. Visually check to see that pins inside socket
are not bent or corroded. Repair or replace
display or circuit board if needed.
“Filter Reminder” is flashing
Filter needs cleaning or replacement.
Clean or replace filter, and reset “Filter Hours
Reset”.
“High Pressure Fault” is
displayed.
1. High-pressure switch is open (in cooling)
due to improper seawater flow.
2. High-pressure switch open (in heating) due
to improper airflow.
1. Strainer or intake may be plugged. Seacock
may be closed. Check seawater hose for
kinks or collapses. Verify pump operation;
check pump circuit breaker if applicable.
2. Remove obstructions in return air stream.
Clean air filter and grille. Check for crushed
or restricted ducting. Ducting must be as
straight, smooth and taut as possible.
If problem persists, reprogram Low Fan
Speed Limit for maximum value. Set Low
Fan Limit to 75, and set the reverse fan
speeds during Heating Mode by changing
the Reverses Fan Speed in Heat under
General Settings or manually set fan speed
to high.
“Low AC Voltage” is
displayed.
1. Supply voltage is too low.
2. Voltage is improperly calibrated.
1. Verify power to unit with multimeter.
2. Verify that Voltage Calibration under
General Settings matches voltage reading
to unit with a multimeter. Adjust Voltage
Calibration if necessary.
“Low Pressure Fault” is
displayed.
1. Low-pressure switch is open due to low
seawater and/or low return air temperatures.
2. Low pressure switch is open due to loss of
refrigerant.
1. Try restarting the air conditioning unit. The
optional low pressure switch has a 10
minute shutdown time delay that may be in
effect.
2. Check air conditioning unit for refrigerant oil
leakage; call service technician.
“Low Pressure Fault” is
displayed.
1. Condenser coil is too hot.
2. Thermistor is damaged.
3. Damaged jack/socket on circuit board.
1. Verify that unit is getting water flow and that
condenser is not fouled.
2. Unplug water sensor if installed. Try another
if it is available.
3. Visually check to see that pins inside socket
are not bent or corroded. Repair or replace
circuit board if needed.
PROBLEM
POSSIBLE REASONS
SOLUTIONS