Troubleshooting - Dometic Smart Touch Cabin Control Installation & Operation Manual

Smart Touch Cabin Control Installation & Operations Manual

TROUBLESHOOTING

G T
ENERAL ROUBLESHOOTING
PROBLEM
System will not start.
Fan is not running.
No cooling or heating
L-3380 ENGLISH
POSSIBLE REASONS
1. Air conditioner circuit breaker is off.
2. Digital control is not turned on.
3. Miswired at terminal strip.
4. Input-line voltage is insufficient.
5. Push-on connectors or butt splices became
disconnected during installation.
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.
TROUBLESHOOTING
SOLUTIONS
1. Turn circuit breaker on at ship's panel.
2. Turn on the control.
3. Check wiring diagram; correct if necessary.
4. Check power source (shore/generator) for
proper voltage. Check wiring and terminals
for proper sizes and connections. Verify with
a voltmeter that the power at the unit is the
same as the power source.
5. Disconnect power supply and open electric
box. Verify connections are tight.
Check "Digital-Controls Troubleshooting" on
page 30.
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.
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