Dometic cool mate & cuddy dc, Installation & Operation Manual

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English
L-2200 Operation
e) If there is a dead short in the wiring, then disconnect
power supply and repair wiring.
If, after trying all of the above, the fan runs, but the
compress and pump do not, then that is a good
indicator there is a problem with the compressor and/
or pump. Whereas, if the fan does not come on at this
time, then that is a good indicator there is a problem
with the fan or the DPM. Either way, call for a service
technician – please see listing in back of this manual.
Problem: No cooling.
Possible Reason/Solution
1. Selector knob may not be in “cool” position . Reset
selector knob.
2. Temperature set point is above ambient tempera-
ture
. Lower temperature setting.
3. Obstructed water flow . Clean seawater strainer.
Check for good steady flow from overboard discharge.
4. Pump may be air locked . Remove hose from pump
discharge to purge air from line.
5. Coil iced . See below.
Problem: Coil iced.
Possible Reason/Solution
1. Thermostat set point is too low . Check setting on
temperature knob. If setting is extreme for conditions,
raise set point.
2. Improper air flow . Clean return air filter or remove
obstructions from return air stream. Check for crushed
or restricted ducting. Ducting run must be as straight
as possible; remove any excess ducting.
Problem: Short cycling compressor.
Possible Reason/Solution
1. Cold supply air returning directly to return air grille .
Redirect supply air so that it is not directed into the return
air stream.
Problem: System runs continuously.
Possible Reason/Solution
1. Port hole or hatch open . Close all port holes and
hatches.
2. Thermostat setting is excessive for conditions .
Raise thermostat setting to cycle compressor.