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Dometic Americana User Manual
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Dometic Americana User Manual

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Americana /Americana Plus
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Classic
•
New Dimensions
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New Generations

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Summary of Contents for Dometic Americana

  • Page 1 • Americana /Americana Plus • Classic • New Dimensions • New Generations...
  • Page 2 Home Refrigerators RV Refrigerators • Compressor vs Absorption • Controlled Environment vs Changing Environment • Recovery time is vastly different 30-45 minutes vs 1-2 hours recovery...
  • Page 3 CONDENSER Absorption System EVAPORATOR SOLUTION IS MADE UP OF: ABSORBER •AMMONIA •WATER •HYDROGEN •RUST INHIBITOR BOILER...
  • Page 5 To properly test a Cooling Unit Three criteria have to be met: •Level ? •Ventilation ? •Heat Source?
  • Page 6 Ventilation  Make sure you check Ventilation and Air Flow -0” clearance on the sides and top -No more than 1” from back of CU to sidewall. (A baffle may need to be installed to help direct air across coils) -If there is an auxiliary fan, check that it is working properly.
  • Page 7 Typical Double Door Install 0” clearance on the side and top and less than 1” from CU to sidewall Application Guide 3308666.XXX...
  • Page 8 Typical Side by Side Installation in Slide Out/2 Sidewall Vents Application Guide 3308666.XXX...
  • Page 9 Symptom: Not Cooling Air is not being forced through the condenser – to much space! Warm air is being trapped around the refrigerator from a poor installation.
  • Page 10 AUXILIARY FANS  Helps with air flow.  3108705.751 for Single Door refers Fan limit switch will close at 105°F and open at 90°F +/- 10%. Limit Switch only: 3104723.006  3108705.744 for Double Door refers Fan limit switch will close at 150°F and open at 120° +/- 10%.

  • Page 11: Heating Elements

    10/11 Heating Elements The function of the heating element is to provide the boiler with a specific amount of BTU’s of Heat AC Heating Element 6,8,10 cu ft. Ohms – Approx. 44 +/- 10% Amps – Approx. 2.7 Watts – 325 Series AC Heating Element for side wise/side by side Ohms –...
  • Page 12 To Perform a By-Pass Test of the Cooling Unit  Disconnect the Thermister from Control Board (with the thermister unplugged no temperature is sensed, therefore, it will run continuously).  Place a glass of water in the refrigerator along with a thermometer.
  • Page 13 To Perform a By-Pass Test of the Cooling Unit Water/Thermometer UNPLUG at P2 Terminal...
  • Page 14 After 12 hours Check Liquid Temperature • Industry Standards with the thermister plugged IN… • 8 cubic foot and larger should be 43°F or Less at 110°F ambient temperature. • 6 cubic foot and smaller should be 43°F or Less at 90°F ambient temperature.

  • Page 15: Refrigerator Specifications

    Refrigerator Specifications  A MINIMUM of 9.6 VDC at terminal block for controls to operate properly.  Best from Battery, if not, from battery side of converter or filtered side.  A MAXIMUM of 6 VAC ripple.  A Dedicated Fused Circuit – Nothing else tied into circuit! ...
  • Page 16 Thermister The function of the thermister is to monitor the temperature inside the refrigerator box using resistance. Symptom: Over Cooling or Under Cooling. Check Ohms Value of thermister. In a glass of ice water at approx. 34°F you should see between 8500 and 9500 Ohms.
  • Page 17 UPPER CONTOL BOARD  The function of the Upper Control Board is to send commands to the Lower Control Board Symptom: No LED lights or no operation   check for DC voltage at the 5/6 wire Harness plugged into the P1 terminal on Lower Board. ...
  • Page 18 5/6 Wire Harness The Function of the 5/6 Wire Harness is to connect from the lower board to the upper control board . Allows the upper board to communicate with the Lower Board. Symptom: No LED lights, No operation. Check Continuity through each wire to chassis ground.
  • Page 19 •Turn on refrigerator. •Check DC voltage coming from upper control board on P1 connector •Check from - and – to + Green to + Black to + Orange (UP) to + Green (GAS Down) to + Black (ELECT. Down) 5/6 Wire Harness in P1 Should see approximately: 9.6 VDC to 22 VDC Connector...

  • Page 20: Lower Control Board

    Lower Control Board  Minimum of 9.6 VDC to Maximum of 22 VDC  Minimum of 9.6 VDC for initial opening of Gas Valve Note: Upper control board will stay lit at 4 VDC, but no commands will be sent to lower control board ALL TESTS ARE TO BE DONE WITH THE REFRIGERATOR IN THE COOLING MODE Unplug the thermister from the control board during...
  • Page 21 No AC Operation-works on LP? OPERATION INCOMING AC VOLTAGE LOWER 5 AMP FUSE BOARD WIRING HEATING ELEMENT...
  • Page 22 GAS COMPONENTS  Gas Solenoid  Gas Valve  Orifice  Igniter  Electrode  Burner  Thermocouple  Flue Baffle...
  • Page 23 Gas Solenoid  The Function of the Gas Solenoid is to allow gas to flow through the gas valve assembly. Symptom:  Check Light or NO LP (gas)  Needs at least 9.6 VDC to open  OHMS 49 +/- 10 %...

  • Page 24: Manual Shut-Off Valve

    Manual Shut-Off Valve  The Gas Valve is responsible for allowing gas to the burner chamber. Symptom:  Manual Check Light or Shutoff valve NO LP  Check manual shutoff valve (horizontal)
  • Page 25 Orifice  The orifice provides a pre-determined amount of gas to the burner. The orifice has a man-made ruby inset that allows LP to mix with air in order to get combustion. Symptom: Check  Light or NO LP  Check orifice for Debris ...
  • Page 26 IGNITER  The function of the re-igniter is to sense resistance through the flame between the electrode and the burner. If there is no flame, the igniter will spark to light the burner. Symptom: Check  Light or No Flame. No sparking sound or there is continuous sparking.
  • Page 27 ELECTRODE  The electrode passes the spark to the burner to light the burner. Symptom:  Check Light or No Spark 3/16” 3 slots  Check for cracks or breaks in ceramic.  Proper location on Burner Note: 3 slot on burner and 3/16 above burner...
  • Page 28 THERMOCOUPLE  The thermocouple’s function is to tell the control board that a flame is present. Symptom:  Check Light or won’t stay lit.  Check wiring, leads may be reversed.  Milli-volts test while in flame, should produce 25-35 – milli-volts...
  • Page 29 Flue Tube and Flue Baffle  The Flue Baffle helps slow the process of heat rise in the flue tube. The Flue Tube is where heat is transferred to the boiler. Symptom:  Cools on AC but not on LP. ...
  • Page 30 CLIMATE CONTROL/LAT SWITCH  Turning on the ambient temperature switch “ON” allows the interior light to turn on so that it will cause the refrigerator to cycle in cold temperatures. This will prevent frozen foods from thawing. .5 amps  Turning the climate control switch on will turn on the frame heater to prevent condensation around the frame.
  • Page 31 Air Leak? Air leaks can cause a situation like this! Over stocking and not allowing air flow on the sides and back of refrigerator can also cause excessive frost.
  • Page 32 Troubleshooting a Check Light  DC Power Supply  Gas Supply  Grounds Thermocouple Burner • DC – If DC voltage drops below 9.6VDC – AC ripple Reignitor on DC line (Dirty Voltage) Electrode • Gas Supply - see components and discuss Solenoid * Grounds- a bad or loose ground can cause a Check Light!
  • Page 33 P3 harness needs to be replaced Ground wire needs to be removed...
  • Page 34 New Universal Board...

  • Page 35: Ice Maker Operation

    Icemaker Operation  All icemakers require 120 volts AC to operate.  Allow refrigerator to Pre-Cool before starting the icemaker.  Make sure Manual Shut-Off valve is “OPEN”.  Make sure that the Bail Arm is in the “DOWN” position...

  • Page 36: Mold Thermostat

    Mold Thermostat This is a bi-metal switch. It starts an ejection cycle by closing at 12°F +/- 3°. The reset temperature is 50°F +/- 5. Symptom : Icemaker is not making ice. Test : Put a glass of water or anti-freeze on the shelf by the icemaker.
  • Page 37 Adjusting the Water Fill Turn screw as necessary toward the “+” or the “-” side. One FULL turn either way will make an 18cc change in the amount of water. DO NOT turn the screw more than one full turn at a time.

  • Page 38: Icemaker Water Valve

    Icemaker Water Valve Valve is Solenoid Operated Ohms Value is 200 to 500. 10-15 watts will energize the coil. Note: When the solenoid is energized, a voltage drop may occur. Symptom: No water in mold. Have already manually cycled icemaker. Test: Check ohms on solenoid coil, see if solenoid is energized when icemaker is calling for water.
  • Page 39 How to Drain the Icemaker  Close the Shutoff Valve.  Place a pan under the solenoid valve.  Remove the inlet fitting from the water solenoid valve. Drain water from water line.  Remove the plastic nut and water line from the outlet side.
  • Page 40 You are the reason we are here!

This manual is also suitable for:

Americana plusClassicNew dimensionsNew generations