Specifications

Operation / Installation Manual – FCF 5000, 9000, 12000, 16000, 24000
Page 25
Troubleshooting
FAULT POSSIBLE REASON CORRECTION
Will not start Air conditioning circuit breaker is off Turn circuit breaker on at ship's panel,
See control operation section in this manual.
Display control is not turned on. Check wiring Diagram and correct if necessary.
Fuse is broken Replaced with a new fuse. (3.15 AL 250V)
Incorrect wiring at terminal strip.
Disconnect power supply and open electric box, check
wiring diagram, correct if necessary,
Push-on butt connectors pulled apart during
installation.
Check power source (shore/generator) for proper voltage.
Input line voltage is insufficient, Check wiring and terminals for proper sizes and
connections.
Fan not
running.
Check your specific control Troubleshooting section
No cooling or
heating
Temperature set point is above (in cooling) or below
(in heating) ambient temperature
Lower or raise set point.
Obstructed seawater flow. Clean seawater strainer. Check for obstructions at speed
scoop thru-hull inlet. Check for a good steady flow from the
overboard discharge.
Seawater pump maybe air-locked,
Remove hose from pump discharge to purge air from lin
e
Refrigerant gas leaked. Check air conditioning unit for refrigerant oil leakage, call
service technician.
Seawater temperature too high for cooling or too low
for heating.
Seawater temperature will directly affect the air conditioning
unit’s efficiency. This air conditioning unit can effectively cool
your boat in water temperature up to 90
0
F and heat (if
reverse cycle option is installed) in water as low as 40
o
F.
Coil is iced (in cooling) See below
Fan is not running. See below
Pressure switch or thermal overload opened. Check your specific control troubleshooting section.
No Heating Reversing valve may be stuck. Tap reversing valve lightly with rubber mallet while unit is in
heat mode, call for service if the problem cannot be solved.