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ection

ection

7 —e

lectronic

ontrols

Power Board

Figure 7-1 shows a front view of the power

board. Inputs, outputs, monitoring information,

and diagnostic functions are sent and received

through a wire harness linking the power board

with the optical control assembly.



NOTE

1210/1211 with ice maker/water dispenser

It may be necessary to move the water valve

out of the way to remove and install the cover.

Base

The base, illustrated in Figure 7-2, is attached

to the refrigerator back plate with two 8-32 x

1" hex head screws. Four locking tabs hold the

power board to the base.

Cover

Figure 7-3 shows a front view of the cover.

Two 8-32 x 1" hex head screws hold the covers

to the refrigerator back plate.
Figure 7-4, page 56 shows the cover

mounted over the power board with external

connections in place.
Figure 7-5, page 56 shows the power board

with the cover removed and all the internal

connections in place,



NOTE

The wire harness is “foamed” into the cabinet.

It is not a replaceable component.

Figure 7-1. —Power board.

Figure 7-2. —Base, power board.

Figure 7-3. —Cover, power board.

Locking tab (4)

Base

8-32 x 1" Hex head screw (2)

This edge up

Troubleshooting

Refer to Section 3 for troubleshooting

information.

100 B

ANS

Z21. 2

JW5

T424F12

05-43

CPC - E

94 V - 0

12VDC

Potter & Brumfield

T7CS1D2-05

5VDC

0544

700514

5A@120VAC

CHINA

1237

0301

29 C

Potte

r & Br

umfiel
d

-0

CHINA

10A@120V

700514

10A@120V

Potte

r & Br

umfiel
d

-09

30VDC

RES

30V
DC

700514

C 1

Potter & Brumfiel

-0

CHINA

10A@120V

30VDC

700514

R20

441

47 R3

R11

R15

Содержание 121X series

Страница 2: ...This page intentionally left blank...

Страница 3: ...rs Section 3 Troubleshooting Flowcharts This section covers troubleshooting information and flowcharts for faults displayed through the optical control display assembly screen Section 4 Ventilation Th...

Страница 4: ...m high temperature monitoring system cooling system replacement cooling system testing diagnostic flow chart and cooling unit replacement procedure Section 9 Diagnostics This section covers accessing...

Страница 5: ...er ANSI Z21 19B standards for installation in mobile homes or recreational vehicles and under Canadian Standards Association CAN CGA 1 4 M94 Electrical components comply with UL standards Replacement...

Страница 6: ...XXXXXXX MODEL N de modele GROUP CODE code de INPUT puissance 1210LRIM For recreational vehicle installation Min Installation clearance 0 sides top bottom back Install only with Kit 3 See installation...

Страница 7: ...ty goggles and other required protection should be used during any process that can cause material to become airborne such as removing a leaking cooling unit or cleaning components Safety Symbols and...

Страница 8: ...luding AC and DC heaters To prevent shock hazard disconnect the AC power cord from the electrical outlet before attempting to remove the power board cover Electrical connections and repairs to electri...

Страница 9: ...r heater 0 42 A Lamp fresh food compartment 0 46 A Gas valve 0 146 A Fans 2 0 400 A per fan Valve water dispenser 10 W 12 VDC Heater water dispenser models water line 0 44 A Heater ice maker only wate...

Страница 10: ...8 Section 2 This page intentionally left blank...

Страница 11: ...no continuity Page 31 L1 oP fault High temperature limit switch open Off level operation Insufficient obstructed or downdraft ventilation Heat deflector cap blocking flue opening Cooling system Page...

Страница 12: ...4 volts DC input to power board Fresh food compartment door open or ajar for more than two 2 minutes Page 13 Page 12 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Less than 10 5 volts DC input to p...

Страница 13: ...Alternating ALARM AUDIBLE Alternating Display Flame present with gas off Page 26 Open circuit high temperature limit switch No AC voltage input to power board AC cord unplugged at power board Power bo...

Страница 14: ...ors Repair as needed then recheck for voltage 1 Unplug wire harness at Power Board P1 con nector 2 Check for voltage across Power Board P1 1 and P1 6 See Figure 3 2 page 15 Replace fuse Voltage output...

Страница 15: ...7a Voltage across Green wire White Violet wire terminals See Figure 3 4 page 16 Optical Control Display overlay ribbon cable plugged incorrectly See Figure 3 6 page 16 Controls okay Go to page 14 NO...

Страница 16: ...17 3 Press and release the OFF ON switch button to turn ON refrigerator 12 NO YES NO YES NO YES YES Controls okay 1 Unplug the Wire Harness at the P1 Power Board connector 2 Check the Wire Harness Bl...

Страница 17: ...ITS 1 Seconds TRUE RMS MULTIMETER V V P1 6 P1 1 10 5 to 15 4 VDC 12 VDC in 12 VDC in F1 Fuse 5 Amp 100 B ANSI Z21 2 JW5 P3 RT424F12 12V 05 43 07 3 D5 R50 R49 07 3 07 3 07 3 4 C Q3 4 C D8 CPC E 94 V 0...

Страница 18: ...oard connector Green White Violet Figure 3 5 Measuring DC voltage across White Violet wire and Blue wire at the optical control display assembly circuit board connector White Violet Blue Optical Contr...

Страница 19: ...4 U4 C3 C5 U3 U6 JW11 Z4 AC heater wires See NOTE MIN MAX RANGE HOLD H Hz REL mA A mV V V OFF A COM V mA A 1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX A CAT II 4 1 2 DIGITS 1 Seconds TRUE RMS...

Страница 20: ...turns off Backup operating system BOS BOS is a duty cycle designed to maintain cooling anytime the thermistor is sensed open or shorted When the refrigerator is operating in BOS changing the temperatu...

Страница 21: ...1000V MAX 400mA MAX FUSED 10A MAX FUSED PEAK MIN MAX A CAT II 4 1 2 DIGITS 1 Seconds 87 TRUE RMS MULTIMETER III Temperature Resistance C F kohms 29 85 8 1 9 0 27 80 9 1 10 0 24 75 10 1 11 0 21 70 11...

Страница 22: ...nge is 58 to 68 ohms YES NO Replace heaters Replace power board The AC HE fault is recorded in either the AUTO or Manual AC mode The following may apply AUTO MODE When AC heaters current input falls b...

Страница 23: ...code displays and is recorded in non volatile memory approximately 25 seconds after the fault occurs IMPORTANT MODE ON OFF SET TEMP on 1 COLD 9 COLDEST 1 COLD 9 COLDEST Power board AC heater relay co...

Страница 24: ...history Correct RV DC output to refrigerator NO Check RV DC power output to refrigerator YES 1 Connect a charged 12 volt bat tery If the fault code does not display check the DC circuit feeding power...

Страница 25: ...NO Check RV DC power output to refrigerator YES YES 1 Connect a fully charge 12 volt bat tery If the fault code does not display check the DC circuit feeding power to the refrigerator 2 If the fault c...

Страница 26: ...f after the two minute period The dr code displays and is recorded in non volatile memory approximately 25 seconds after the fault occurs IMPORTANT Begin Fresh food compartment doors latch ing when cl...

Страница 27: ...ce as needed Door damaged or warped 4 YES Replace door NO Switches turn off light when held closed 5 Replace switch NO YES From page 24 Adjust door hinges until the left door and the right door rail a...

Страница 28: ...ower board NO Check for DC voltage at gas valve solenoid terminals YES Gas valve leaking internally or stuck open Replace gas valve Replace power board NO YES The FL fault is recorded in all operating...

Страница 29: ...he switch In both cases troubleshoot for the L1 oP fault cause IMPORTANT MODE ON OFF SET TEMP on 1 COLD 9 COLDEST 1 COLD 9 COLDEST Begin Refrigerator cooling before L1 Op fault displayed 1 Burner over...

Страница 30: ...heck fans operation 1 Replace fans 2 Replace reset high temperature limit switch 3 Test cooling system performance on AC and LP gas operation 1 Clear obstructions 2 Replace reset high temperature limi...

Страница 31: ...ult to occur in AC Manual Mode AC voltage input has to fall below 85 volts with the controls calling for cooling The alarm sounds and the fault displays approximately 25 seconds later IMPORTANT Begin...

Страница 32: ...ction 2 page 7 79 to 85 kOhms NO Verify spark sense electrode air gap NO Check spark sense assembly See Figure 3 12 page 31 YES NO Replace assembly Check gas valve solenoid coil resistance Go to page...

Страница 33: ...S 1 Seconds TRUE RMS MULTIMETER V P1 Connector P2 Connector From page 30 6 6 Voltage present during trial for ignition Check voltage output to solenoid coil See Figure 3 14 5 Check continuity of solen...

Страница 34: ...uit present when it is not supposed to be 3 Gas valve drive circuit not present when it is supposed to be 4 Internal memory fault The fault registers approximately 25 seconds later in Diagnostic scree...

Страница 35: ...erves as the service access or door The air intake vent needs be kept clear of obstructions that may restrict the flow of fresh air into the enclosure Figure 4 1 illustrates a typical air intake vent...

Страница 36: ...ffle 0 1 in clearance max 1 4 in clearance max 622293 Roof cap 616319 Exhaust vent Aluminum or galvanized steel sheet baffle full width of enclosure 0 1 in clearance max Vent even or below enclosure f...

Страница 37: ...le 4 to 4 in B ottom baffle Top baffle 1 in clearance max 1 in clearance max Aluminum or galvanized steel sheet baffle full width of enclosure Angle not to exceed 45 622293 Roof cap 616319 Exhaust ven...

Страница 38: ...nce max 621156 Vent Vent even or below enclosure floor 1 4 in clearance max Aluminum or galvanized steel sheet baffle full width of enclosure Wood aluminum or galvanized steel sheet solid baffle Full...

Страница 39: ...of the enclosure and the top of the upper vent opening 62 in Vent even or below enclosure floor Enclosure depths of more than 24 in and less then 26 in Bend of baffle flush with bottom edge of vent d...

Страница 40: ...op surface of baffle flush with bottom edge of vent frame Minimum distance between the bottom of the enclosure and the top of the upper vent opening 62 in Distance between the top of the lower vent op...

Страница 41: ...and 11 1 5 w c provide necessary amount of gas for efficient combustion and heat generation Gas pressure below 10 5 w c Gas pressure below 10 5 w c results in a weak flame with low heat input to the...

Страница 42: ...SI Operation In AUTO LP gas mode or LP gas mode operation the controls energize the solenoid coil to open the gas valve Spring pressure closes the valve when the electronic controls de energize the so...

Страница 43: ...he potential for gas leaks 11 Open the gas valve s at the LP gas container s 12 Leak test the LP gas supply line fitting 13 Plug the AC cord into the RV outlet 14 Connect 12 VDC power to the power boa...

Страница 44: ...llips screws 2 LP gas supply line connection fitting RV LP Gas supply line Solenoid coil 12 VDC power connections Bracket W hite W hite ON OFF ON ON ON Burner tube connection fitting Torque 75 to 95 i...

Страница 45: ...illustrated in Figure 5 4 Coil resistance should be within 77 and 85 ohms Burner Tube Assembly The burner tube is 1 4 inch OD aluminum tubing The anti vibration loop absorbs vibration to prevent meta...

Страница 46: ...e orifice adapter 8 Remove the orifice assembly from the burner 9 Remove the burner retaining screw then pull the burner out of the burner box WARNING Always use two wrenches to disconnect the burner...

Страница 47: ...pter assembly or burner threads A damaged orifice adapter for burner creates a potential for gas leaks Burner retaining screw 8 32 X 3 8 Phillips head Figure 5 7 Installing burner in burner box 10 Che...

Страница 48: ...33 U1 LP1 Q1 Q2 Q6 C9 D10 R11 R12 C7 R16 R15 R17 R19 R13 R22 R32 R31 Z2 D7 R14 U4 C3 C5 U3 U6 JW11 Z4 Fresh Food Compartment Light The fresh food compartment light off and on operation is controlled b...

Страница 49: ...ach the thermistor to the fin to the second fin from the right and position it 1 to 1 1 2 inch from the top edge of the fin 10 Power on the refrigerator Light Thermistor Wire Assembly The light and th...

Страница 50: ...supplied by the power board Figure 6 6 Thermostatic switch for fans Thermostatic switch The thermostatic switch is illustrated in Figure 6 6 Incoming 12 volt DC is fed through upper terminal The switc...

Страница 51: ...Y jumper See Figure 6 7 2 Remove fan and bracket assembly from cooling unit 3 Remove the existing fan and bracket from sump Save the screws and spacers to reinstall the new fan 4 Reverse steps 3 to 1...

Страница 52: ...refrigerator automatically energizes the flapper heater circuit Heater operation can be detected by touching the exterior surface of the flapper assembly The overall surface should be slightly warm to...

Страница 53: ...er to Figure 6 9 for location of components 1 Power off refrigerator 2 Open the left fresh food compartment door 3 Remove the bottom and top flapper hinge screws 4 Lift the flapper assembly until the...

Страница 54: ...food compartment door 2 Pull out the existing spring pin from the flange 3 Push and seat the replacement spring pin into the contact flange 4 Check spring pin operation a Push the pin all the way unt...

Страница 55: ...e cord is attached to the refrigerator back plate with a 8 32 x 1 hex head screw The cord ground wire lug is also attached to the back plate with a 8 32 x 1 hex head screw AC Power Cord 1211IM Ice Mak...

Страница 56: ...ation illustrated on Figure 6 14 is an 8 amp fast acting 1 4 x 1 1 4 x 1 AGC fuse Figure 6 15 illustrates how to check fuse continuity 120 Volt AC Heaters Two 120 volts AC heaters generate the heat lo...

Страница 57: ...all the internal connections in place NOTE The wire harness is foamed into the cabinet It is not a replaceable component Figure 7 1 Power board Figure 7 2 Base power board Figure 7 3 Cover power boar...

Страница 58: ...30VDC RES 30VDC RES 700514 D4 R37 R34 4 6 5 D 12 D 11 Z3 C 1 Potter Brumfield T77V1D10 09 CHINA 10A 120VAC 30VDC RES 700514 JW4 JW6 D2 R9 R7 R24 R46 R4 R5 R23 R20 R18 R21 R21 JW7 JW9 JW10 JW8 R36 R41...

Страница 59: ...trol display troubleshooting instructions may be found on Section 3 of this manual Optical control display assembly side Decorative box assembly side Screw 4 Striker Plate Figure 7 6 Optical control d...

Страница 60: ...ex head screws b Pull the cover off the power board For steps 7 8 9 10 See Figure 7 12 page 60 7 Disconnect the AC heater wires at power board a Black wires at terminals AC_HT_LO and AC_HT_LO2 b Yello...

Страница 61: ...Section 7 59 12 volt DC connections AC power cord Figure 7 10 Power board external connections Cover 8 32 x 1 Hex head screw Figure 7 11 Cover retaining screws location Spark sense electrode Assembly...

Страница 62: ...ard up to remove from base To install power board on base 1 Insert bottom edge into the base bottom tabs 2 Press evenly on upper edge to lock power board in the base Figure 7 13 Power board removal in...

Страница 63: ...ve are not covered with insect screen plastic sheeting leaves or a birds nest Loose insulation is not blocking air flow over the condenser or absorber or the flue opening Both fans are working DC volt...

Страница 64: ...cap location is illustrated in Figure 8 1 Operation over maximum leveled limits The refrigeration cycle works on gravity flow Exceeding off level limits during operation affects the flow of refrigeran...

Страница 65: ...o cooling sensed 1 COLD 9 COLDEST ON OFF MODE TEMP SET on 1 COLD 9 COLDEST Figure 8 2 Diagnostic screen 5 segment 7 no cooling sensed The cooling system monitoring control monitors the cooling perform...

Страница 66: ...er to provide the best possible monitoring of temperature Figure 8 3 illustrates the original high temperature limit switch configuration with a resettable switch Figure 8 4 illustrates the present co...

Страница 67: ...Testing The cooling System Diagnostic Flowchart on page 66 through page 67 provides sequential steps to troubleshoot the cooling system Before attempting to replace the cooling system 1 Make sure the...

Страница 68: ...s 2 Signs of cooling system leakage Yellow ammonia residue Ammonia smell Installation ventilation meet guidelines Replace cooling system YES YES YES Correct installation and ventilation NO 3 Heat inpu...

Страница 69: ...taken in step 4 NO 1 Reconnect thermistor to wire harness 2 Set controls to Diagnostic Mode 3 Select diagnostic Screen 3 4 Record temperature displayed in Screen 3 5 Monitor fin temperature for 3 hour...

Страница 70: ...em replacement requires removing the refrigerator from the enclosure Protect the front of the refrigerator Cover the floor with a moving blanket pad or similar soft material to protect the floor as we...

Страница 71: ...hermal Mastic sealant supplied with the replacement cooling unit Each tube tip must be cut wide to dispense a bead approximately no wider than 3 4 inch wide Apply the sealant as outlined in the follow...

Страница 72: ...ion Screw condenser bracket Screw condenser bracket Screw absorber bracket Screw absorber bracket Permagum sealer Wire tie Screw Wire tie Power board cover 7 slot burner Dip cup Fans 2 Thermostatic sw...

Страница 73: ...attempt to install cooling unit in the the enclosure without the assistance of an able person Attempting the installation without additional help may cause personal injury and or extensive property d...

Страница 74: ...ten each screw 30 to 55 in pound 25 Install the fin assembly screws Tighten each screw 30 to 55 inch pounds 26 Attach the thermistor to the second fin counting from the right After installing the refr...

Страница 75: ...Figure 91 shows the screen number location and LED segments numbering Setting Display to Diagnostics To set the display to diagnostics 1 Press and hold down the mode and SET TEMP switch buttons at th...

Страница 76: ...ldest Fin Temperature Displays fin temperature as sensed by the temperature sensing circuit through the thermistor This is not freezer or fresh food cabinet air temperature The example illustrated bel...

Страница 77: ...eating is sensed in the cooling unit boiler area The system sensing algorithm still present and will sense a no cool condition however it will not lock out heat sources or display the no co fault code...

Страница 78: ...assigned LED segments and information are illustrated below 4 10 5 to 15 4 volts DC 1 Over 15 4 volts DC 7 Below 10 5 volts DC 1 cold 9 coldest Pressing the mode switch button displays screen 1 cold...

Страница 79: ...enses the mold temperature At approximately 17 to 14 degrees Fahrenheit 8 3 to 10 degrees Celsius the thermostat energizes the stepper motor and the heater As the motor turns the ejector blades begin...

Страница 80: ...s color coding and application Figure 10 2 illustrates the AC power cords installed on 1210 IM and 1211 IM The cord connect to the ice maker four wire harness AC power to the ice maker is to be suppli...

Страница 81: ...ent Water Line Heater In ambient temperatures of 42 to 38 degrees Fahrenheit 5 5 to 3 3 degrees Celsius and lower the water line heater keeps the fill line and water valve body from freezing when the...

Страница 82: ...10 7 page 81 Solenoid coil RV water connection Water to ice maker Bracket Figure 10 6 Water valve and water connections 4 Disconnect thermostatic switch and the water fill line heater 5 Disconnect the...

Страница 83: ...nts L and H Before starting shut off the water supply to the water valve and make sure the AC power cord is plugged into an energized receptacle To manually cycle the ice maker 1 Remove the ice bin an...

Страница 84: ...Celsius The motor should run smoothly throughout the cycle until the ejector is parked If the motor does not run stops or makes grinding noises replace ice maker See section Replacing Ice Maker page 8...

Страница 85: ...shown in Figure 10 12 6 2 8 1 3 5 D O N O T ROTATE 6 2 8 3 5 8 DISCONNECT POWER TO MODULE 106 626649 IM REMOVE S W2 01 13 03 185W 115V 60 HZ 14 AW G IN S U LA TE D Figure 10 11 Jumpering test points V...

Страница 86: ...from the evaporator plate Do not to pull on the wire harness 3 Rotate the ice maker so the module cover faces toward the freezer door then remove the cover 4 Roll the ice maker so the shut off arm si...

Страница 87: ...ion then insert one probe into point L and the other into point H as Figure 10 14 illustrates The multimeter test probe tips must be at least 1 2 inch long to contact the test points Figure 10 15 Meas...

Страница 88: ...container s in freezer 1 Check freezer door gasket wire harness Permagum seal 2 Containers that contain liquids have to be sealed prior to placing in freezer Not cycling AC power available 1 Mold heat...

Страница 89: ...Figure 10 17 Figure 10 17 Ice maker fasteners and back plate Back plate Figure 10 19 Harness plug and thermal fuse To unplug wire harness Press locking tab in then pull back on harness Open spring cli...

Страница 90: ...compression style fitting which feeds both the water dispenser valve and the ice maker water valve Ice Maker Water Valve Figure 10 21 and Figure 10 22 illustrate and provide information on the ice mak...

Страница 91: ...der mounted water dispenser Figure 11 1 the reservoir Figure 11 2 and the water valve Figure 11 3 Figure 11 1 Water dispenser external view Figure 11 2 Reservoir in cabinet recess and cover Figure 11...

Страница 92: ...y the coil opens the water valve allowing water flow into the reservoir Water flows from top of the reservoir to the spigot The water flowing out of the spigot is replaced by water flowing into the re...

Страница 93: ...C WHITE wire from the water valve solenoid coil 5 Disconnect thermostatic switch and the water fill line heater as follows a The switch BROWN wire from the heater WHITE wire b The remaining thermostat...

Страница 94: ...llow water to drain into the container placed in step 4 7 Disconnect the water fill line from the reservoir See Figure 11 9 8 Remove the retaining screws then pull the reservoir out of the cabinet rec...

Страница 95: ...circuit board from bracket See Figure 11 11 B C and D 7 Reverse steps 6 through 1 to install replacement LED circuit board Striker plate Hinge cover Retaining screws Figure 11 10 Cover water dispenser...

Страница 96: ...94 Section 12 Section 12 Wiring Diagrams and Pictorials Figure 12 1 Wiring diagram...

Страница 97: ...Section 12 95 Figure 12 2 Wiring pictorial...

Страница 98: ...Coil Water valve 6 Ice Maker 7 Mold Heater 8 Mold Thermostat 9 ON OFF Switch 10 Fill Switch 11 Hold Switch 12 Stepper Motor N G L GRN VERT BRN BRUN WHT BLANC BLK NOIR NEUTRAL RIBBED NEUTRE NERVURES W...

Страница 99: ...Section 12 97 This page intentionally left blank...

Страница 100: ...121X Series Service Manual Publication No 630613B 08 10 07 NORCOLD Inc Customer Support Dept Telephone 800 543 1219 Fax 937 497 3183 www norcold com NORCOLD Inc P O Box 4248 Sidney OH 45365...

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