Dometic MCS15 User Manual [en, ru, de, es, fr, it, cs, pl]

Marine Air Conditioner

FRITES

Installation Manual. . . . . . . . . . . . . . . 3

Bootsklimaanlage

Montageanleitung . . . . . . . . . . . . . . 35

Marine Climate System

Instructions de montage . . . . . . . . . 74

Marine Climate System

Indicazioni di montaggio . . . . . . . . 112

Marine Climate System

Instrucciones de montaje. . . . . . . . 149

Marine Climate System

Montagehandleiding . . . . . . . . . . . 187

Klimatanläggning för båtar

Monteringsanvisning . . . . . . . . . . . 222

Судовой кондиционер

Инструкция по монтажу . . . . . . . . 255

System klimatyzacji łodzi

Instrukcja montażu. . . . . . . . . . . . . 296

Marine Climate

System

MCS5, MCS15

Lodní klimatizace

Návod k montáži . . . . . . . . . . . . . . 335

Lodné klimatizačné zariadenie

Návod na montáž. . . . . . . . . . . . . . 371

MCS5, MCS15

Please read this instruction manual carefully before starting the appliance and keep it in a safe place for future reference. If you pass on the appliance to another person, hand over this operating manual along with it.

Contents

1 Notes on using the manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Target group for this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4 Proper use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5 Technical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

6 Operating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

7 Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

8 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

10 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

11 Guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

12 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

13 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Notes on using the manual MCS5, MCS15

1 Notes on using the manual

CAUTION! Safety instruction: Failure to observe this instruction can lead to

injury.

NOTICE!

Failure to observe this instruction can cause material damage and impair the function of the product.

NOTE

Supplementary information for operating the product.

➤ Action: This symbol indicates that action is required on your part. The

required action is described step-by-step.

✓ This symbol describes the result of an action. fig. 1 5, page 3: This refers to an element in an illustration. In this case,

item 5 in figure 1 on page 3.

2 Safety instructions

The manufacturer accepts no liability for damage in the following cases:

 Faulty assembly or connection  Damage to the product resulting from mechanical influences and excess

voltage

 Alterations to the product without express permission from the manu-

facturer

 Use for purposes other than those described in the operating manual

2.1 General safety

CAUTION!

 Electronic devices are not toys!

Keep electrical appliances out of reach from children or infirm persons. Do not let them use the appliances without supervision.

MCS5, MCS15 Target group for this manual

 Persons (including children) whose physical, sensory or mental

capabilities or lack of experience and knowledge prevents them from using the appliance safely should not use this appliance without initial supervision or instruction by a responsible person.

 Use the device only as intended.  Do not make any alterations or conversions to the device.  Installation and repairing of the air conditioner may only be car-

ried out by qualified personnel who are familiar with the risks involved and the relevant regulations. Inadequate repairs can lead to considerable hazards. For repair service, please contact the service centre in your country (addresses on the back).

3 Target group for this manual

This operating manual is for air conditioner users.

4 Proper use

The Marine Climate System is an air conditioning system designed for use on boats or yachts. It can cool down or warm up the interior of the boat or yacht.

5 Technical description

The Marine Climate Systems MCS5 and MCS15 are marine air conditioners which can be used for variable air conditioning inside a boat or a yacht. They can cool and warm the room.

The Marine Climate System consists mainly of the air conditioning unit and a control panel. A refrigerant gas is circulating through the system which is seawater cooled.

Operating elements MCS5, MCS15

6 Operating elements

6.1 Control Panel

Key to fig. 1, page 2:

Item Name Description

1 Power Button Press and release to toggle between the On

and Off Modes.

Fan Button Press to advance through the available fan

settings. “1”(lowest) through “6” (highest) indicates Manual Fan Speeds.

The letter “a” indicates automatic fan operation selected.

3 Down Button Press and release to display the set point.

Press and hold the Down Button to decrease the set point. Set point is decreased one degree each time the button is depressed.

4 Faceplate sensor The faceplate sensor will read the room

temperature unless a remote air sensor is installed.

5 Up Button Press and release to display the set point.

Press and hold the Up Button to increase the set point. Set point is increased one degree each time the button is depressed.

6 Display The inside air temperature is displayed when

the control is on. The set point is displayed when either Up or Down Button is pressed.

The display also indicates program information and fault codes.

When the control resumes operation after a power interruption all the display LEDs will turn on for one second. This is normal operating condition and is referred to as Power On Reset.

7 LED “Heat Mode” This LED is lit when

– the Heat Only Mode is selected – or the unit is in a heating cycle.

MCS5, MCS15 Operating

Item Name Description

8 LED “Fan Indicator” This LED is lit when a Manual Fan Speed is

selected.

9 LED “Cool Mode” This LED is lit when

– the Cool Only Mode is selected – or when the unit is in a cooling cycle.

6.2 Dual Button Functions

Up and Down Buttons

 While in the On Mode: Simultaneously press the Up and Down Buttons

to display outside air temperature providing the optional outside air temperature sensor is installed.

 While in the Program Mode: Simultaneously press the Up and Down

Buttons to set new program defaults.

Power and Down Buttons

 While viewing the service fault history log: Simultaneously press the

Power and Down Buttons to clear the fault history log (see “Service History Log” on page 13).

 While in the On Mode: Simultaneously press the Power and Down

Buttons to enter the Moisture Mode (see “Moisture Mode” on page 10).

7 Operating

7.1 Initial startup

NOTICE!

Do not turn the unit off and immediately turn it back on. Allow at

➤ Ensure seawater intake ball valve (seacock) is open.

➤ Make sure the control is powered OFF.

➤ Turn on air conditioner circuit breaker.

➤ If the seawater pump has its own circuit breaker, turn that on too.

least 30 s for refrigerant pressure equalization.

Operating MCS5, MCS15

➤ Press the Fan Button (fig. 1 2, page 2).

✓ This energizes the fan.

➤ Verify that the fan is running and that there is steady airflow out of the sup-

ply-air grille.

➤ Select a temperature set point lower than the current cabin temperature.

✓ This starts the compressor and seawater pump.

➤ Check for a steady solid stream of seawater from the overboard

discharge.

➤ If the unit does not appear to be operating properly, refer to trouble-

shooting guidelines (“Troubleshooting” on page 23).

7.2 Overview

Power On

➤ Press the Power button (fig. 1 1, page 2) once to engage the system.

✓ The display indicates room temperature when the system is on and is

blank when the system is off.

Set Temperature

➤ Press the Up or Down button (fig. 1 3 and 4, page 2) to set the desired

room temperature. The set point can be viewed by momentarily pressing and releasing the Up or Down button.

Fan Speed

Fan-speed operation is automatic, allowing fan speed to decrease as the set point temperature is approached in the Cool Mode. The fan operates at low speed when set point is satisfied.

➤ Use the Fan button (fig. 1 2, page 2) to select manual fan speeds.

You can program the fan to run only when cooling or heating is required. Normally the automatic fan-speed operation is reversed in the Heating Mode, however, the fan can be programmed to operate the same as in the Cooling Mode.

MCS5, MCS15 Operating

Memory

The control’s nonvolatile memory requires no batteries or backup power. When power is lost, the operating parameters are retained indefinitely. When power is restored, the control resumes operating as last programmed.

7.3 Modes of Operation

Off Mode

When the Marine Climate System is in the Off Mode, all control outputs are turned off. Program parameters and user settings are saved in nonvolatile memory.

On Mode

When the Marine Climate System is in the On Mode, power is supplied to the appropriate outputs and the display indicates the current state of operation. The operating and program parameters resume based on those stored the last time the unit was operating.

Cool Mode

When Cool Mode is selected, the Cool Mode LED is lit and the cooling systems are operated as required. When the temperature drops below the set point, the system will not automatically switch to the Heat Mode.

Heat Mode

When the Heat Mode LED is lit, only the heating systems are selected and operated as required. Should the temperature rise above the set point, the system will not automatically switch to the Cool Mode.

Automatic Mode

Automatic Mode provides both heating and cooling as required. The Heat or Cool LED will be lit according to the mode required.

Temperature in a given mode is maintained within 2 °F (1.1 °C) of set point, however a 4 °F (2.2 °C) difference is required to allow the Marine Climate System to change modes.

Once the mode changes temperature will be maintained within 2 °F (1.1 °C) of set point.

Operating MCS5, MCS15

Manual Fan Mode

Manual Fan Mode allows to select the desired fan speed manually. When a manual fan speed has been selected, the Fan LED will be lit. Manual Fan Mode is sometimes preferred when room temperature is constantly changing due to varying heat loads.

The fastest fan speed is represented by “6”, the slowest represented by “1”.

➤ Press and hold the Fan Button during normal operation to select one of

the six manual fan speeds available.

Circulation Mode

When the system is off at the control panel the fan can be used to only circulate the air.

➤ Press and hold the Fan Button when the display is off until the desired

speed number appears in the window.

➤ Release the Fan Button

✓ The fan will run at the selected speed circulating the air without heating or

cooling.

➤ Press the Power Button once to cancel the Circulation Mode and enter the

On Mode.

Moisture Mode

➤ While in the On Mode simultaneously press the Power and Down Buttons.

✓ The first cycle will start in one minute.

➤ Press the Power Button to end the Moisture Mode.

✓ The “HU1” mnemonic code is displayed while in the Moisture Mode.

Program Mode

NOTE

The program mode can only be entered from the Off Mode.

The Program Mode is used to adjust the systems operating parameters to suit the particular needs of individual users. The Program Mode is also used to tailor the air conditioning system for the most efficient operation within an installation.

MCS5, MCS15 Operating

Variables such as ducting, sensor location and system layout affect the system operation. The Marine Climate System is shipped with factory default settings which are stored in permanent memory and can be recalled at any time.

7.4 Operating the Marine Climate System

NOTICE!

Do not turn the unit off and immediately turn it back on. Allow at

➤ Press the Power Button (fig. 1 1, page 2) shortly to engage the system.

✓ The display indicates room temperature when the system is on and is

least 30 s for refrigerant pressure equalization.

NOTE

When powering on the Marine Climate System, press and immediately release the Power Button in order to not unintentionally en-

tering Program Mode. If the Program Mode is entered unintentionally, any subsequent presses of the Up or Down Button will change the P-1 parameter setting, which can result in improper system operation.

blank when the system is off.

➤ Press the Down Button (fig. 1 3, page 2) or Up Button (fig. 1 5, page 2)

to choose the desired set point.

✓ The display indicates room temperature when the system is on and is

blank when the system is off.

✓ The thermostat is now set to maintain a constant temperature.

➤ Set the desired room temperature by pressing the Up or Down Button.

The set point can be viewed by momentarily pressing and releasing the Up or Down Button.

The Marine Climate System has nonvolatile memory requiring no batteries or backup power. When power is lost the operating parameters are retained indefinitely. When power is restored, the Marine Climate System resumes operating as last programmed.

Automatic fan speed operation allows fan speed to decrease as room temperature is approached in the Cool Mode. The fan will operate at low speed when set point is satisfied.

Manual fan speeds can be selected with the Fan Button.

Operating MCS5, MCS15

The fan can be programmed to run only when cooling or heating is required. Normally the automatic fan speed operation is reversed in the Heating Mode, however, the fan can be programmed to operate the same as in the Cooling Mode.

7.5 Automated Factory Self Test Program

The Marine Climate System software provides a self test program to facilitate factory testing of the entire air conditioning system. Once the self test program is activated, the test cycle will continue until the AC power is interrupted or the Power Button is pressed once which returns the system to the Off Mode.

➤ Activate the self test program by pressing the Power Button while turning

on the AC power.

➤ Release the Power Button while the display indicates “888” and all LEDs

are lit.

✓ The Marine Climate System is now in the self test program.

✓ “tSt” appears in the display while in the self test program.

Once activated the self test software will continuously execute the following procedure:

 Turn on in the Heat Mode and supply heating for 10 min.  Stop heating and run the fan only for 5 min.  Switch to Cool Mode and continue cooling for 10 min.  Stop cooling and run the fan only for 5 min.  Return to step one and continue until interrupted.

The self test program will continue until the power is interrupted or the test is halted by pressing the Power Button once.

MCS5, MCS15 Operating

7.6 Service Tools

Hour Meter

Total compressor cycle time is saved in EEPROM every six minutes of continuous compressor running time. Cycles less than six minutes are discarded to conserve memory and allow the most flexible hour-meter possible.

To view the hour meter proceed as follows:

➤ Turn off the AC power.

➤ Press the Down Button and hold it.

➤ Restore AC power.

✓ After Power-On Reset is complete, the following appears in the display:

– “Hr” is displayed for one second. – The display blanks out for one second then displays the thousands of

hours for three seconds.

– The display blanks out for one second then displays the hundreds

units for three seconds.

✓ The unit returns to the last operating state before power was removed.

Maximum recorded time is 65,536 hours, the meter stops and can only be reset by a service technician.

Service History Log

The Marine Climate System records and remembers the eight most recent faults. Each time a fault is detected, a one hour timer is started.

Three consecutive faults within that hour cause system shut down, lock out and display the fault code. During that hour, to conserve memory, the same recurring fault is not recorded in the service history log. Continuous operation for one hour without the same recurring fault clears that fault counter but the event remains in the service history log until overwritten. Should a different fault be detected during the hour, it will be entered into the service history log.

The following events are entered into the service history log:

 High Freon Pressure  Low Freon Pressure  Air Sensor Fault

Programming MCS5, MCS15

To view the service history log proceed as follows:

➤ Turn off the AC power.

➤ Press the Fan Button and hold it.

➤ Turn on the AC power.

➤ Once Power On Reset is completed (display indicates “888” and all LEDs

are lit) release the Fan Button.

✓ The display will flash the most recent fault detected, followed by the event

chronology number.

➤ To view other events detected press either the Up or Down Button.

➤ To clear the service history log simultaneously press the Power and Down

Buttons.

➤ To exit the service history log

– press either the Power, the Up or the Down Buttons or – wait thirty seconds without pressing any button.

8 Programming

8.1 Entering Program Mode

➤ Press and hold the Power Button while in the Off Mode until the letter “P”

appears in the display.

✓ The characters “P1” followed by the parameter setting, appear in the

display.

✓ The Marine Climate System is now in the Program Mode.

NOTE

The Marine Climate System will exit the Program Mode and return

to the Off Mode if no programming is attempted for one minute.

8.2 Changing Program Parameters

➤ Increment from one program parameter to the next by pressing the Fan

Button.

➤ Press the Up and Down Buttons to select the data or set the desired limits

for the parameter being programmed.

MCS5, MCS15 Programming

8.3 Saving New Program Parameters

NOTE

Factory defaults shown in the “Programmable Parameters Table”

➤ Simultaneously press the Up and Down Buttons to save the new program

✓ This will set the new program defaults.

on page 16 may be reset manually (see “Restore Memorized Default Settings” on page 16).

parameters.

8.4 Exiting the Program Mode

There are two methods to exit the Program Mode.

➤ Press the Power Button ✓ The Marine Climate System will return to the Off Mode.

… or

➤ Do not press any buttons and do not attempt any program changes for

one minute.

✓ The Marine Climate System will exit the Program Mode.

8.5 Software Identification

The software version of the Marine Climate System is identified for one second prior to the exit from the Program Mode. The software identification number, e.g. (“A12”) will appear in the display for one second, then the Marine Climate System will return to the Off Mode.

NOTE

Should there be any reason to contact Dometic about the system

or programming the Marine Climate System be sure to have the software identification number and air conditioning unit serial number available. The serial number may be found on the typeplate.

Programming MCS5, MCS15

8.6 Restore Memorized Default Settings

The memorized default settings can be restored as follows.

➤ Enter the Program Mode.

➤ Set P-17 to “rSt”.

➤ Exit the Program Mode.

✓ The software version number (e.g. “A12”) appears in the display.

✓ The memorized default settings are restored and the Marine Climate Sys-

tem returns to the Off Mode.

8.7 Programmable Parameters

Programmable Parameters Table

Program

number

P-1 Operating Mode 0 0 = Automatic mode

P-2 High Fan Speed Limit

P-3 Low Fan Speed Limit

P-4 Compressor Staging

P-5 Temperature Sensor

P-6 Failsafe 3 0 = Minimum protection

P-7 Low AC Voltage Shut-

P-8 De-Icing Cycle 1 OFF

P-9 High Water Tempera-

Description Default Range

1 = Cool only mode 2 = Heat only mode

95 65 – 95

(arbitrary units)

55 30 – 64

(arbitrary units)

Time Delay

Calibration

down (Volts)

ture Limit (°F)

15 5 – 135 s

Ambient

Temperature

115 V – OFF

220/230 V – OFF

OFF 100 – 150

Ambient 10 °F

1 = Continuous, no display 2 = Continuous, with display 3 = Four failures, reset required

75 – 105 175 – 205

1 = On with 5 °F faceplate sensor differential

2 = On with 7 °F faceplate sensor differential

MCS5, MCS15 Programming

Program

number

P-10 Display Brightness

P-11 Display ºF or ºC F F = Fahrenheit displayed

P-12 Cycle Pump With

P-13 Reverse Fan Speeds

P-14 Continuous Fan or

P-15 Reverse Cycle Heating

P-16 Fan Motor type selec-

P-17 Reset Memorized

P-18 Reserved for Future

P-19 Reserved for Future

P-20 Filter Threshold

P-21 Current Filter Time

P-22 Voltage Calibration

Description Default Range

9 4 = Low

Control

Compressor or Continuous Pump

During Heating Mode

Cycle Fan with Compressor

or Electric Heat Only Option Installed (cooling only units)

tion Shaded Pole or Split Capacitor.

Programming Defaults

Option

(x10 hours)

(Volts)

OFF OFF = Cycle with compressor

rEF nor = Normal fan operation

con CYC = Cycle fan with compressor

nor nor = Reverse cycle heating

SC SP = Shaded pole fan motor

nor rSt = Reset defaults

––

00 00 – 250

x10 Hours Using

Current Filter

AC Voltage –

13 = Maximum

C = Celsius displayed

On = Continuous pump

rEF = Reversed fan in heating

con = Continuous fan operation

ELE = Electric heater installed

SC = Split capacitor fan motor

nor = Normal

–

NOTE

Should any programming problems or confusion occur, reset the Memorized Default Settings by entering the program mode and setting P-17 to “rSt”. If recent programming changes were made but not saved, the reset will return to the last saved defaults, which could differ from the factory defaults.

Programming MCS5, MCS15

P-1: Operating Mode

The following operating modes can be selected:

 Automatic Mode by selecting “0”  Cool Only Mode by selecting “1”  Heat Only Mode by selecting “2”.

P-2: High Fan Limit

The upper fan speed limit can be adjusted for various motors. The high fan limit is adjusted with the system installed and operating. The values range from 65 through 95, arbitrary units.

➤ Use the Up and Down Buttons to select the desired speed.

– Increase the number for a higher fan speed. – Decrease the number to lower the fan speed.

P-3: Low Fan Limit

The low fan limit determines the lowest output allowed for the low fan speed. The values range from 30 through 64, arbitrary units.

➤ Use the Up and Down Buttons to select the low fan limit.

– Increase the number for a higher fan speed. – Decrease the number to lower the fan speed.

NOTE

Once the high and low fan speed limits are set, the unit will auto-

P-4: Compressor Staging Time Delay

The compressor staging delay is provided for installations where more than one system operates from the same power source. Setting different staging delays allows compressors to start at different times when power is interrupted.

Units should be staged 5 s apart. The minimum delay is 5 s and the maximum is 135 s.

matically readjust the remaining speeds to produce three equally spaced fan speeds in both Automatic and Manual Fan Modes.

MCS5, MCS15 Programming

P-5: Temperature Calibration

Use this feature to calibrate the ambient sensor.

➤ Select P-5.

✓ The ambient temperature appears in the display.

➤ Use the Up and Down Buttons to set the correct reading.

✓ The temperature in the display will increase or decrease as required.

P-6: Failsafe Level

There are four failsafe levels (see “Failsafe and Fault Handling Codes” on page 26).

P-7: Low AC Voltage Shutdown

Use this feature to shut down the unit if the voltage drops to a dangerously low level.

By default it is off, but it can be set from 175 – 205. This feature works immediately at start up, but while running will require a 5 min delay before displaying a fault to prevent nuisances.

The fault code is “LAC”.

P-8: De-Icing Cycle

The Marine Climate System is equipped with a de-icing cycle to prevent ice build up on the evaporator coil during extended periods of cooling operation. Installation variables such as grille sizes, length of ducting, insulation R factors and ambient temperatures determine the cooling run time required to achieve set point. Customer usage may substantially increase run times by operating the system with the hatches and doors open.

Programming an unrealistic set point (e.g. 65 °F/18.3 °C) and leaving the salon door open will usually cause the evaporator to ice up on warm humid days.

De-icing is accomplished by using an algorithm that closely monitors the room air temperature in repeating 10 min intervals during a cooling cycle.

Programming MCS5, MCS15

The de-icing feature has two different, selectable behavior modes when it is used in conjunction with the control panel’s built-in room air temperature sensor. It attempts to compensate for any temperature discrepancy that the faceplate sensor may experience. Although this discrepancy is not typical, installation variables such as where the control panel is placed inside the room (e.g. near an open door or in direct sunlight) can affect how accurately it can read the actual room temperature.

By default with P-8 set to “1” (ON), the algorithm is applied assuming the faceplate sensor may be reading the room temperature as much as 5 °F (2.8 °C) greater than the actual evaporator temperature.

With programmable parameter P-8 set to “2”, the temperature differential that is applied to the faceplate sensor reading is increased to 7 °F (3.9 °C) for even more extreme installations. Setting P-8 to “2” should only be used if a setting of “1” does not prevent evaporator ice from forming.

Alternately, the installation of an optional alternate air temperature sensor (located in the return air path) will greatly increase the effectiveness of the de-icing feature, and this option should be considered whenever the faceplate sensor cannot read the room temperature accurately.

P-9: High Water Temperature Limit

Use this feature to shut down the unit if the water in condenser coil rises to a dangerously high level.

By default it is off, but it can be set between 100 and 150 °F.

The fault code is “PLF”.

P-10: Display Brightness Control

The display brightness can be adjusted from 4 (dimmest) to 13 (brightest).

P-11: Fahrenheit or Celsius Selection

The default setting is “°F”. Select “°C” for Celsius. Celsius readings are displayed in tenths, e.g. 22.2°.

P-12: Cycle Pump With Compressor

The pump can also be programmed to operate continuously or cycle on demand.

➤ To program continuous operation select “On”.

MCS5, MCS15 Programming

P-13: Reverse Automatic Fan Speeds During Heating

The automatic fan speeds can be reversed during Heating Mode. The fan will speed up as the set point is approached. Lowering the fan speed when the cabin is cold increases head pressure and helps raise supply temperature. The fan switches to low speed when the set point is satisfied and the compressor cycles off.

Normal fan operation is represented by “nor”.

➤ To reverse fan speeds in heating, select “rEF”.

P-14: Cycle Fan with Compressor

The fan can be programmed to run continuously when the system is on or can be allowed to cycle with the compressor.

The default is “con”, continuous fan.

➤ To cycle the fan with the compressor select “CYC”.

NOTE

When used with optional electric heat the fan will remain on 4 min

P-15: Reverse Cycle or Electric Heat

after the heater cycles off.

➤ Do not change the default parameter.

P-16: Fan Motor Selection

NOTE

The unit’s High Velocity (HV) blower has a Split Capacitor (SC) fan

➤ Select “SC”.

➤ Save this change as a new default by simultaneously pressing and releas-

➤ Make note of new default in the Programmable Parameters table for

motor. For this motor this parameter must be changed from “SP” to “SC” in order for the blower to work at peak efficiency.

ing the Up and Down Buttons prior to exiting the program mode.

future reference and servicing.

Programming MCS5, MCS15

P-17: Reset Memorized Defaults

The default programming parameters can be reset as follows:

➤ Select “rSt”.

✓ This restores the programmable parameters to the default values.

The default parameters listed in the “Programmable Parameters Table” on page 16 may be altered by the installing dealer or end user. Once new defaults are entered and memorized the factory defaults will be overwritten. The original factory program parameters as listed in the table may be restored manually.

P-18, P-19: Reserved for Future Option

P-20: Filter Threshold

This feature is to remind you to change the air filter on a unit. The units are x10 hours.

By default it is off, which is designated with a “00”, but it can be set between 100 and 2500 hours. After the unit has reached its threshold time, it will display a “FIL” remind 1 s every 10 s.

P-21: Current Filter Time

This feature is used to display the amount of time the current filter has been on the unit. The units are x10 hours.

➤ In order to reset this parameter, simply press the Up or Down Button.

P-22: Voltage Calibration

This feature displays the voltage reading as seen by the display. Calibrating this parameter will provide a more accurate voltage when calculating low voltage for P-7. It will display a live reading of the voltage.

➤ Manipulate the reading by pressing the Up or Down Button.

MCS5, MCS15 Troubleshooting

9 Troubleshooting

9.1 General Troubleshooting

Problem Possible Reason Solution

System will not start. Air conditioning unit circuit

breaker is off. Control is not turned on. Turn control on. Wrong wiring at terminal strip. Check wiring diagram and correct

Push-on butt connectors became disconnected during installation.

Input line voltage is insufficient. Check power source (shore/gen-

Fan is not running. – See corresponding section in

No cooling or heating. Temperature set point is satisfied. Lower or raise set point.

Obstructed seawater flow. Clean seawater strainer.

Seawater pump may be airlocked.

Loss refrigerant gas. Check air conditioning unit for

Seawater temperature too high for cooling or too low for heating.

Turn circuit breaker on at ship’s panel.

if necessary. Disconnect power supply and

open electric box. Check wiring diagram, correct if

necessary.

erator) for proper voltage. Check wiring and terminals for

proper sizes and connections. Verify with a volt-meter that the

power at the unit is the same as the power source.

“Control Panel Troubleshooting” on page 27.

Check for obstructions at speed scoop thru-hull inlet.

Check for a good steady flow from the overboard discharge.

Remove hose from pump discharge to purge air from line.

refrigerant oil leakage. Call service technician.

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 in water temperatures as low as 40 °F (4.4 °C).

Troubleshooting MCS 5, MCS15

Problem Possible Reason Solution

No cooling or heating (contn’d).

No cooling Control panel may not be in “cool”

No heating. Unit is “cool only”, or if reverse

Fan coil is iced (in cooling). See below. Fan is not running. See corresponding section in

“Control Panel Troubleshooting” on page 27.

Seawater plumbing is air-locked. Ensure that seawater plumbing is

installed per the guidelines in the Installation Manual.

The Marine Climate System is programmed for Cool or Heat only, or mechanical control thermostat is rotated too far towards either Cooler or Warmer setting.

High pressure switch open (in cooling) due to improper seawater flow.

Strainer or intake may be plugged, seacock may be closed.

High pressure switch open (in heating) due to improper airflow.

High-pressure switch is open in heating mode.

Compressor’s thermal overload is open due to either of the above reasons.

position. Coil iced. See below.

cycle, reversing valve may be stuck.

Set P1 to the desired value or rotate the mechanical control thermostat.

Check seawater hose for kinks or collapses.

Verify pump operation. Check pump circuit breaker if

applicable. 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).

System may cycle on high-pressure if seawater temperature is above 55 °F (12.8 °C).

Compressor needs to cool down. Turn system off for a while (it may

take up to three hours to reset thermal overload).

Reset control panel.

Tap reversing valve lightly with rubber mallet while unit is in heat mode.

Call for service if that does not correct the problem.

MCS5, MCS15 Troubleshooting

Problem Possible Reason Solution

Low airflow. Airflow is blocked. Remove any obstructions in

Fan Coil is iced. See below.

Fan coil is iced. Thermostat set point is too low. Check setting on control panel.

Improper airflow. Remove any obstructions in

Supply air is short-cycling. Redirect supply air so that is not

Humidity level too high. Close hatches and doors. When all else fails. Switch air conditioning unit to

Water coil is iced in the Heating Mode.

System runs continuously.

Seawater temperature is below 40 °F (4.4 °C).

Set point temperature is improperly set: too low for cooling or too high for heating.

Porthole or hatches open. Close all port holes and hatches.

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.

If setting is extreme for conditions, raise set point until unit cycles off to give coil time to thaw.

return air stream. Clean return air filter and grille. Check for crushed or restricted

ducting. Ducting run must be as straight

as possible; remove any excess ducting.

See the “Control Panel Troubleshooting” on page 27 for reprogramming options.

blowing into the return air stream. Seal any air leaks on duct.

heat until ice melts or use hair dryer to melt.

Shut down system to prevent damage to condenser.

Allow coil to defrost. Raise or lower set point.

Troubleshooting MCS 5, MCS15

Problem Possible Reason Solution

System runs continuously (contn’d).

Short cycling compressor

Seawater temperature too high for cooling or to low for heating.

Improper air sensor location. See corresponding section in

Cold supply air returning directly to return air grille.

Seawater temperature will directly affect the air conditioning unit’s efficiency.

This air conditioning unit can effectively cool your boat in water temperatures as low as 40 °F (4.4 °C) and heat (if reverse cycle option is installed) in water up to 90 °F (32.2 °C).

“Control Panel Troubleshooting” on page 27.

Redirect supply air so that it is not directed into the return air stream.

9.2 Failsafe and Fault Handling Codes

When a fault is detected the Marine Climate System will display one of the following Mnemonic fault codes:

 “ASF”: Indicates Air Sensor Fault.  “FIL”: Indicates filter needs replacing (if this option is enabled).  “HPF”: Indicates High Freon Pressure.  “LAC”: Indicates Low AC voltage (if this option is enabled).  “LPF”: Indicates Low Freon Pressure (Not applicable to MCS models).  “PLF”: Indicates high water temperature in condensing coil (if this option

is enabled).

NOTE

“HPF” is not indicated and does not cause lockout in Heat Mode.

“LPF” has a 10 min shut down delay.

Failsafe Level 0

Only “ASF” detected and displayed.

The Marine Climate System will shut down and will not restart until the fault is repaired.

Once the fault is repaired the Marine Climate System will restart.

MCS5, MCS15 Troubleshooting

Failsafe Level 1

All actions in level 0 plus all other faults detected but not indicated.

The system shuts down for 2 min or until the fault is cleared, whatever is longer.

The system will restart if the fault is cleared.

Failsafe Level 2

All actions same as level 0 and 1. Faults are indicated.

The system shuts down for 2 min or until the fault is cleared, whatever is longer.

Failsafe Level 3

All actions the same as level 0, 1 and 2.

The system shuts down for 2 min or until the fault is cleared, whatever is longer.

The system will lockout after four consecutive “HPF” or “LPF” faults.

To clear the lockout:

➤ Pressing the Power Button once to Off Mode.

➤ Pressing the Power Button again to On Mode.

9.3 Control Panel Troubleshooting

Problem Possible Reason Solution

Control panel is not lit. 8-pin display cable plugs are not

making contact (unplugged, dirty, bent, or broken pins).

Fan is not running or runs continuously.

Fan is not running but the compressor is.

The Marine Climate System is programmed for either fan cycling with compressor or continuous fan operation.

Failed triac on control panel circuit board.

Power off at the circuit breaker. Remove connector and inspect. If damaged, replace connector or

entire display cable. Reprogram parameter P-14.

Note: After the compressor cycles off, the fan will continue to run for 2 min in Cool Only Mode and 4 min in Heat Only Mode regardless of parameter setting.

Send for repair or call local service technician.

Troubleshooting MCS 5, MCS15

Problem Possible Reason Solution

Fan runs continuously although it is set to cycle with compressor.

No cooling or heating. The Marine Climate System is

No heat. The Marine Climate System may

Unit switches to heat while in Cool Mode.

Fan coil is iced. Improper airflow. See corresponding section in

System runs continuously.

“ASF” (Air Sensor Failure) is displayed.

“FIL” (Filter Replacement) is flashing.

Failed triac on control panel circuit board.

programmed for heat or cool only. “HPF” or “LPF” is displayed. See below.

be set to Electric Heat, not Reverse Cycle.

De-icing feature enabled due to coil icing up.

Improper air sensor location. Verify display head location.

Unrealistic set point. Adjust set point until unit cycles

Indicates failed face plate air sensor, alternate air sensor or display cable.

Damaged jack/socket in display head or on circuit board.

Filter needs replacement. Replace filter.

Send for repair or call local service technician.

Reprogram parameter P-1.

Reprogram parameter P-15.

Reprogram parameter P-8

“General Troubleshooting” on page 23, before reprogramming the Marine Climate System.

Reprogram parameter P-8 to enable de-icing.

If de-icing cycle does not melt ice, switch air conditioning unit to heat until ice melts or use hair dryer to melt ice.

If problem persists, reprogram Low Fan Speed Limit for maximum value: Set P-3 to 64.

Install alternate air sensor if necessary.

off. Unplug alternate air sensor if

installed or plug in alternate air sensor if not installed.

Try another display cable. Visually check to see that pins

inside socket are not bent or corroded.

Repair or replace display or circuit board if needed.

Reset P-21 to “00”.

MCS5, MCS15 Troubleshooting

Problem Possible Reason Solution

“HPF” (High Freon Pressure) is displayed.

“LAC” (Low AC Voltage) is displayed.

“LPF” (Low Freon Pressure) is displayed.

“PLF” (Low Pump Flow) is displayed.

High-pressure switch is open (in cooling) due to improper seawater flow.

Strainer or intake may be plugged, seacock may be closed.

High-pressure switch open (in heating) due to improper airflow.

Supply voltage is too low. Verify power to unit with multi-

Voltage is improperly calibrated. Verify that P-22 matches voltage

Low-pressure switch is open due to low seawater and/or low return air temperatures.

Low pressure switch is open due to loss of refrigerant.

Condenser coil is too hot. Verify that unit is getting water

Thermistor is damaged. Unplug water sensor if installed.

Damaged jack/socket on circuit board.

Check seawater hose for kinks or collapses.

Verify pump operation. Check pump circuit breaker if

applicable. Remove obstructions in return air

stream. Clean air filter and grille. Check for crushed or restricted

ducting (ducting must be as straight, smooth and taut as possible).

If problem persists, – reprogram Low Fan Speed

Limit for maximum value: Set P-3 to “64”

– set the reverse fan speeds dur-

ing Heating Mode parameter P-13 to “rEF”, or manually set fan speed to high

meter.

reading to unit with a multimeter. Try restarting the air conditioning

unit, the optional low pressure switch has a ten minute shutdown time delay that may be in affect.

Check air conditioning unit for refrigerant oil leakage.

Call service technician.

flow, and that condenser is not fouled.

Try another if it is available. Visually check to see that pins

inside socket are not bent or corroded.

Repair or replace circuit board if needed.

Maintenance MCS5, MCS15

10 Maintenance

10.1 Reversing Valve

The reversing valve must be energized periodically to keep the internal parts moving freely.

➤ Switch the air conditioner unit into heat for a few seconds once a month.

10.2 Seawater Strainer

➤ Ensure that your pump receives adequate seawater flow by regularly

cleaning the strainer basket.

➤ Periodically check the overboard discharge for a steady stream of water.

➤ Check seawater intake speed scoop for obstructions.

➤ Make sure hoses are not looped, kinked or crushed.

10.3 Condenser Coil Cleaning

NOTE

For the purpose of protecting the environment, dispose of any con-

taminated acid solutions in accordance with federal, state and/or local regulations.

Coils can become fouled over a period of time due to marine growth or scale build-up. This both obstructs water flow and prohibits proper heat transfer.

➤ Turn off the system at the circuit breaker on the ship’s panel.

➤ Disconnect the inlet and outlet connections of the condenser coil.

➤ Place a strainer or piece of screen over the inlet of the pump.

➤ Submerse the pump into a container filled with a 5 % solution of muriatic

or hydrochloric acid and fresh water or use a premixed over-the-counter solution.

CAUTION!

Avoid spilling or splashing the solution.

Follow all warnings and recommendations given by the manufacturer of any acids or premixed solutions.

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