Smart Touch Cabin Control Installation & Operations Manual TROUBLESHOOTING
L-3380 ENGLISH 33
No cooling or
heating
1. Temperature set point is satisfied.
2. Obstructed seawater flow.
3. Seawater pump may be air-locked.
4. Loss of refrigerant gas.
5. Seawater temperature too high for
cooling or too low for heating.
6. Fan coil is iced (in cooling).
7. Fan is not running.
8. Seawater plumbing is air-locked.
9. Digital control is programmed for
Cool or Heat only, or mechanical-
control thermostat is rotated too far
toward either Cooler or Warmer
setting.
10. (For CW systems only) Chilled-
water loop is inadequately cooled
or heated, chiller system is not in
the proper mode of operation, or
Electric Heater is disabled.
11. High-pressure switch is open (in
cooling) due to improper seawater
flow.
12. High-pressure switch is open (in
heating) due to improper airflow.
13. High-pressure switch is open (in
heating) due to high seawater
temperature.
14. Compressor’s thermal overload is
open due to either of the above
reasons.
1. Lower or raise set point.
2. Clean seawater strainer. Check for obstructions at speed scoop
thru-hull inlet. Check for a good steady flow from the overboard
discharge.
3. Remove hose from pump discharge to purge air from line.
4. Check air conditioning unit for refrigerant oil leakage; call
service technician.
5. Seawater temperature will directly affect air conditioning unit’s
efficiency. This air conditioning unit can effectively cool your
boat in water temperature up to 90°F (32.2°C) and heat (if
reverse-cycle option is installed) in water temperatures as low
as 40°F (4.4°C).
6. Check your specific control troubleshooting section.
7. Check your specific control troubleshooting section.
8. Ensure that seawater plumbing is installed per the guidelines in
this manual.
9. See digital control manual for reprogramming.
10. If the air handler system is equipped with water-temperature
sensors, check the water temperature at the digital control. If the
water temperature is not at least 15°F warmer (for heat mode) or
cooler (for cool mode), the water valve will not open. See “CW
Operational Settings” on page 17. If the air handler system is
equipped with an electric heater, ensure that Option 7,
Electric
Heat
or
Auxiliary Electric Heat
option, is enabled.
11. 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.
12. Remove any obstructions in return air stream. Clean return air
filter and grille. Check for crushed or restricted ducting. Ducting
must be as straight, smooth and taut as possible.
13. System may cycle on high pressure if seawater temperature is
above 55°F (12.8°C).
14. Compressor needs to cool down. Turn system off for a while (it
may take up to three hours to reset thermal overload).
PROBLEM POSSIBLE REASONS SOLUTIONS
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