Frigidaire FFHT1821QB 図

IMPORTANT SAFETY NOTE
The information provided herein is designed to assist qualified repair personnel only. 
Untrained persons should not attempt to make repairs due to the possibility of electrical 
shock. Disconnect power cord before servicing this appliance.

If any green grounding wires are removed during servicing, they must be returned to their 
original position and properly secured.

 

FOR FRESH FOOD THERMISTOR AND DEFROST THERMISTOR

-10

83.88

11

47.25

32

27.20

53

16.87

-9

81.56

12

46.02

33

27.04

54

16.49

-8

79.32

13

44.84

34

26.38

55

16.13

-7

77.15

14

43.67

35

25.75

56

16.77

-6

75.04

15

42.55

36

25.13

57

15.41

-5

73.02

16

41.45

37

24.53

58

15.07

-4

71.02

17

40.39

38

23.95

59

14.74

-3

69.08

18

39.36

39

23.38

60

14.42

-2

67.16

19

38.36

40

22.83

61

14.10

-1

65.34

20

37.39

41

22.29

62

13.79

0

63.55

21

36.44

42

21.77

63

13.49

1

61.82

22

35.53

43

21.26

64

13.21

2

60.15

23

34.63

44

20.77

65

12.92

3

58.20

24

33.78

45

20.29

66

12.65

4

56.97

25

32.94

46

19.83

67

12.38

5

55.43

26

32.13

47

19.37

68

12.11

6

53.97

27

31.33

48

18.92

69

11.85

7

52.53

28

30.57

49

18.49

70

11.60

8

51.16

29

29.83

50

18.07

71

11.36

9

49.81

30

29.10

51

17.66

72

11.12

10

48.51

31

28.39

52

17.26

73

10.88

Type A With Run/Start Capacitor

65°F (18°C) Ambient

90°F (32°C) Ambient

Operating Time

25 to 35%

45 to 55%

Freezer Temperature

2° to 8°F (-17° to -13°C)

0° to 5°F  (-18° to -15°C)

Refrigerator Temperature

35° to 40°F (2° to 4°C)

35° to 40°F  (1° to 4°C)

Low Side Pressure (cut-in) 

8 to 16 psig  ( 55 to 110 kPa)

8 to 16 psig (55 to 110 kPa)

Low Side Pressure (cut-out)

1 to 4 psig (7 to 28 kPa)

1 to 4 psig (7 to 28 kPa)

High Side Pressure  
(last 1/3 cycle)

110 to 120 psig   

(758 to 827 kPa)

150 to 175 psig   

(1034 to 1207 kPa)

Wattage (last 1/3 cycle)

140 to 185

140 to 185

Amps (running)

1.1 to 1.6

1.1 to 1.6

Base Voltage

115 vac (127 vac max)

115 vac (127 vac max)

Refrigerant Charge

4.25 oz. (121 g)

Cabinet Size: 18’/20’

Cut-in

Cut-out

Watts

Ohms

Termina-
tion

110°F 

(43.3°C)

135°F  

(57.2°C)

375

35

47°F  

(8.3°C)

3.1

1100 CW Opposite Shaft

0.03 Running

6.2

2600 CW

0.05 Running

Electrical

115 vac (127 vac max)

60 Hertz

Thermostat

Opens at 48°F (9°C)

Closes at 15°F ( -9°C) (ice maker 

with black housing)

9°F (-13°C) (ice maker  

with white housing)

Heater Wattage

165 vac

1

Green / Yellow

Ground

2

Yellow

Water Valve

3

Black 

Line

4

Light Blue

Neutral

Remove cover by  

inserting screwdriver in notch at   

bottom and prying cover from housing. Use screwdriver to rotate motor gear counter-

clockwise until holding switch circuit is completed. All components of ice maker should 
function to complete the cycle.

 

 

The water fill adjustment screw will change the fill time. One 

full turn is equal to 20cc (.68 oz.). The correct fill is 102 to 130cc (3.4 to 4.3 oz.). 

When a water valve is replaced, the fill volume must be checked.

      

Normal Cooling

Mode 

Enters Service

Mode 

Compressor ON

Test 4: Evaporator 

Fan ON

Test 2: Power ON

to Defrost Heater  

Test 3: Fresh 

Food Light ON

Press Door Switch

      2 Times

      2 Beeps 

Press Door Switch 3

Times and Hold 4th Press Until

Long Beep 

Press Door Switch 5 Times to 

Enter Manual Defrost. POR 

or Enter Service Mode to Exit 

Manual Defrost.

Press Door Switch

      2 Times

      2 Beeps 

Press Door Switch

      2 Times

      2 Beeps 

Press Door Switch

      2 Times

      2 Beeps 

Press Door Switch

      2 Times

      2 Beeps 

Condition:

Fresh Food Door is left open for more than 5 minutes and alarm sounds.

Duration:

Alarm will sound for 2 minutes, then stop. If the “Door Ajar” condition remains, 
the alarm will repeat every 30 minutes for two intervals.

Fresh Food Light:

After 15 minutes of “Door Ajar” condition, the Fresh Food light will turn off.

Reset:

Close the Fresh Food door or Press the Fresh Food Door switch.

Unit will complete normal defrost cycle.

--> Press the FF door switch 5 times in 2 secs.; Alarm sounds 5 short beeps 
to acknowledge MANUAL DEFROST.

--> Cycle power to the unit or enter and exit  
SERVICE MODE. 

Defrost is terminated when defrost thermistor located on the evaporator coil reaches 47°F.
Safety Thermostat in the defrost circuit is a safety device only. It will interrupt power to the defrost 
heater at 135°F.

SERVICE MODE will step through available tests to diagnose individual electrical circuits. Fresh 
Food compartment light will be OFF while in SERVICE MODE.

--> Press the door switch 3 times and hold the 4th press until 1 long 
beep is heard. The door switch must be pressed 4 times in 2 seconds.

--> Press the door switch 2 times; 2 short beeps acknowledge selection.

1

Compressor

Press the FF door switch twice to start the first test.  In each test, the 
component listed will be powered on. The component will stay powered 
until the next test is activated, or until 5 minutes of inactivity expire. Listen 
for operating sounds; feel for heat or air flow, as appropriate, to determine 
the result of each test. Press the FF door switch twice again to advance 
between tests. Two beeps will sound to confirm the next test has started.

2

Heater

3

FF Light

4

Evaporator Fan