Dometic MCS-CTRL, Инструкция по установке и эксплуатации

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39
EN
Smart Touch Cabin Control Troubleshooting
Problem Possible Causes Recommended Solution
The pump does
not run.
A high-pressure fault may be present. See “A high-pressure fault is present” in this table.
The compressor
does not shut off.
A relay on the circuit board has shorted
closed.
Call service to verify and replace the board.
The compressor
does not run.
A relay on the circuit board has shorted open. Call service to verify and replace the board.
There is an open overload on the compressor. • Call service to verify and repair.
• If the overload on the compressor is internal, wait several hours for it to
cool before testing.
A low-pressure fault
is present.
The unit does not have a low-pressure switch,
but the JP2 jumper on the circuit board has
been removed or a parameter, if applicable,
has been enabled on the display.
• If the unit does not have a low-pressure switch, ensure the JP2 jumper
on the board is in place over both pins.
• Disable the parameter, if applicable.
The low-pressure switch is open due to low
seawater and/or low return-air temperatures.
Try to restart the air conditioning unit. The optional low-pressure switch
has a ten-minute shutdown time delay that may be in effect.
The low-pressure switch is open due to a loss
of refrigerant.
• Check the air conditioning unit for a refrigerant oil leak.
• Call for service.
The low-pressure switch is defective or a wire
is loose.
• Contact a servicing dealer to test the low-pressure switch and to ensure
the wires are properly connected and seated in the orange plug on the
circuit board.
• Ensure the orange plug is not installed backwards on the circuit board.
A high-pressure
fault is present.
The seawater flow is obstructed. The
condenser coil may be too hot to touch.
• Water should be flowing strongly out of the overflow. Be sure the
seacock is open and water is flowing to the pump.
• Clean the seawater strainer.
• Check for obstructions at the speed scoop thru-hull inlet.
• Check for a strong, steady flow from the overboard discharge.
The high-pressure switch is open (in heating)
due to improper airflow.
• Remove any obstructions in the return-air stream.
• Clean the air filter and grille.
• Check for crushed or restricted ducting. The ducting must be as
straight, smooth, and as taut as possible.
• If the problem persists, reprogram the low fan speed limit for maximum
value.
• Set the low fan limit to 75, and set the reverse fan speeds during
heat mode by changing the reverse fan speed in Heat under general
settings, or manually set the fan speed to high.
The high-pressure switch is open (in heating)
due to a high seawater temperature.
The system may cycle on high-pressure if the seawater temperature is
above 55 °F (13 °C).
The high-pressure switch is defective or a wire
is loose.
• Contact a servicing dealer to test the high-pressure switch and to
ensure the wires are properly connected and seated in the orange plug
on the circuit board.
• Ensure the orange plug is not installed backwards on the circuit board.
The seawater pump may be air-locked. • Ensure that the seawater plumbing is installed according to the
guidelines in the Installation Manual included with the air conditioning
unit.
• Remove the hose from the pump discharge to purge air from the line.
The seawater pump is not running. • Water should be strongly flowing out of the overflow .
• Ensure the pump is not damaged from being run dry.
• Check if the pump is receiving voltage.
• Check the pump circuit breaker or the relay board, if applicable.