Smart Touch Cabin Control Installation & Operations Manual TROUBLESHOOTING
L-3380 ENGLISH 35
“FIL” (Filter
Reminder) is
flashing
Filter needs cleaning or replacement. Clean or replace filter, and reset “Filter Hours Reset”.
“HPF” (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.
“LAC” (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.
“LPF” (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.
“PLF” (Low Pump
Flow) 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
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