BOTTOM MOUNT REFRIGERATORS, FREEZERS & MERCHANDISERS Installation, Operation and Maintenance Technical Instructions
FREEZERS |
: F23-S, F23-SH |
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F49-S, F49-SH |
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F72-S, F72-SH |
REFRIGERATORS |
: R23-S, R23-SH, R23-G |
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R49-S, R49-SH, R49-G |
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R72-S, R72-SH, R72-G |
MERCHANDISERS |
: GR26H, GR48S, GR72H |
- 1 – |
05/15 Rev. G 146526 |
A. GENERAL
1. SPECIFICATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
A3 |
1)GENERAL
2)MAIN COMPONENTS
2. REFRIGERATION CYCLE - - - - - - - - - - - - - - - - - - - - - - - - - - |
A9 |
3. TROUBLE SHOOTING - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
A11 |
1)CHECKING THE POWER SUPPLY
2)CHECKING THE POWER SUPPLY OF CONTROL BOARD
3)CHECKING THE CONTROL PART OF REFRIGERATION CYCLE
4)CHECKING THE DEFROST PART
5)WHEN THE UNIT DOES NOT COOL
6)WHEN THERE IS A ABNORMAL NOISE
7)WHEN THE TEMPERATURE DOES NOT DISPLAY
8)WHEN THE LAMP DOES NOT LIGHT
9)CHECKING SENSOR
4. FEATURE CHART - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
A22 |
5. WIRING DIAGRAM - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
A28 |
6. REPLACEMENT OF COMPONENTS - - - - - - - - - - - - - - - - - - |
A37 |
- 2 – |
05/15 Rev. G 146526 |
1.SPECIFICATION
1.1GENERAL - SOLID DOOR FREEZER & REFRIGERATOR (FULL DOOR / HALF DOOR)
PRODUCT |
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SOLID (FULL/HALF) DOOR |
SOLID (FULL/HALF) DOOR |
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FREEZER |
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REFRIGERATOR |
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MODEL |
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F23-S / |
F49-S / |
F72-S / |
R23-S / |
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R49-S / |
R72-S / |
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F23-SH |
F49-SH |
F72-SH |
R23-SH |
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R49-SH |
R72-SH |
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Capacity |
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650ℓ(23ft3)/ |
1,385ℓ(49ft3)/ |
2,035ℓ(72ft3)/ |
650ℓ(23ft3)/ |
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1,385ℓ(49ft3)/ |
2,035ℓ(72ft3)/ |
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648ℓ(22.9ft3) |
1,381ℓ(48.8ft3) |
2,028ℓ(71.6ft3) |
648ℓ(22.9ft3) |
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1,381ℓ(48.8ft3) |
2,028ℓ(71.6ft3) |
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Net Capacity |
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552ℓ(19.5ft3)/ |
1,195ℓ(42.2 ft3)/ |
1,790ℓ(63.2ft3)/ |
552ℓ(19.5ft3)/ |
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1,195ℓ(42.2 ft3)/ |
1,790ℓ(63.2ft3)/ |
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551ℓ(19.4ft3) |
1,191ℓ(42.1 ft3) |
1,782ℓ(63ft3) |
551ℓ(19.4ft3) |
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1,191ℓ(42.1 ft3) |
1,782ℓ(63ft3) |
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Exterior Dimension |
(W) |
695 |
1,400 |
1,980 |
695 |
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1,400 |
1,980 |
(27.4”) |
(55.2”) |
(78.0”) |
(27.4”) |
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(55.2”) |
(78.0”) |
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(Including casters |
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(D) |
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838 (33”) |
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Door Handles) |
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(H) |
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2,127 (83.7”) |
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(W) |
600 |
1,305 |
1,885 |
600 |
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1,305 |
1,885 |
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(23.6”) |
(51.4”) |
(74.2”) |
(23.6”) |
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(51.4”) |
(74.2”) |
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Interior Dimension |
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(D) |
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635 (25”) |
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(H) |
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1,545 (60.8”) |
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Product Weight |
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124 (273 lb)/ |
194 (428 lb)/ |
255 (562 lb)/ |
121 (267 lb)/ |
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186 (410 lb)/ |
253 (558 lb)/ |
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126 (278 lb) |
198 (437 lb) |
260 (573 lb) |
123 (271 lb) |
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190 (419 lb) |
258 (569 lb) |
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Door Type |
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Swing 1EA/ |
Swing 2EA/ |
Swing 3EA/ |
Swing 1EA/ |
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Swing 2EA/ |
Swing 3EA/ |
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Swing 2EA |
Swing 4EA |
Swing 6EA |
Swing 2EA |
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Swing 4EA |
Swing 6EA |
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Door Material |
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Stainless steel (STS) |
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Shelves |
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4EA |
8EA |
12EA |
4EA |
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8EA |
12EA |
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Power Voltage |
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AC 115V/60Hz |
AC 115V |
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AC 115V/60Hz |
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/208-230V |
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60Hz |
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Plug in - Installation |
NEMA 5-15P |
NEMA 14-20P |
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NEMA 5-15P |
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Amps |
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8.5A |
9.5A |
9.0A |
7.5A |
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7.5A |
10.0A |
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Compressor |
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3/5HP |
3/4HP |
9/8HP |
3/8HP |
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3/8HP |
1/2HP |
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R-404A |
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R-134a |
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Refrigerant |
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340 g |
630 g |
670 g |
210 g |
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270 g |
400 g |
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(12.0 oz) |
(22.2 oz) |
(23.6 oz) |
(7.5 oz) |
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(9.5 oz) |
(14.0 oz) |
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Range of Temperature |
Below -18 (0°F) |
0 ~ 4 (+32°F ~ +40°F) |
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Door auto-close equipment |
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Auto-close for Spring |
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Door stop |
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120˚ Stop |
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Air suction equipment |
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Air damper |
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Caster |
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4” × 4EA |
4” × 6EA |
4” × 4EA |
4” × 6EA |
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Condensing unit |
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Sliding Type |
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Above specifications are subjected to change without prior notice for quality improvement.
The nameplate(includes Serial Number) is located on the upper left of the cabinet interior.
- 3 – |
05/15 Rev. G 146526 |
1.2 GENERAL - GLASS DOOR REFRIGERATOR
PRODUCT |
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GLASS (FULL) DOOR REFRIGERATOR |
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MODEL |
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R23-G |
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R49-G |
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R72-G |
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Capacity |
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650 ℓ |
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1,385 ℓ |
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2,035 ℓ |
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(23 ft3) |
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(49 ft3) |
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(72 ft3) |
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Net Capacity |
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552 ℓ |
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1,195 ℓ |
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1,790 ℓ |
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(19.5 ft3) |
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(42.2 ft3) |
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(63.2 ft3) |
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Exterior Dimension |
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(W) |
695 |
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1,400 |
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1,980 |
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(27.4”) |
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(55.2”) |
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(78.0”) |
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(Including casters |
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(D) |
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835 (32.9”) |
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Door Handles) |
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(H) |
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2,127 (83.7”) |
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(W) |
600 |
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1,305 |
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1,885 |
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(23.6”) |
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(51.4”) |
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(74.2”) |
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Interior Dimension |
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(D) |
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635 (25”) |
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(H) |
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1,545 (60.8”) |
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Product Weight |
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126 |
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200 |
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271 |
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(278 lb) |
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(441 lb) |
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(597 lb) |
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Door Type |
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Swing 1EA |
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Swing 2EA |
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Swing 3EA |
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Door Material |
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Stainless steel (STS) |
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Shelves |
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4EA |
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8EA |
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12EA |
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Power Voltage |
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AC 115V/60Hz |
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Plug in - Installation |
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NEMA 5-15P |
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Amps |
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5.0A |
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7.5A |
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8.0A |
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Compressor |
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3/8HP |
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3/5HP |
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3/5HP |
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R-134a |
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R-404A |
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Refrigerant |
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220 g |
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320 g |
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640 g |
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(7.8 oz) |
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(11.3 oz) |
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(22.6 oz) |
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Range of Temperature |
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0 ~ 4 (+32°F ~ +40°F) |
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Door auto-close equipment |
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Auto-close for Spring |
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Door stop |
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120˚ Stop |
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Air suction equipment |
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Air damper |
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Caster |
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4” × 4EA |
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4” × 6EA |
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Condensing unit |
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Sliding Type |
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Above specifications are subjected to change without prior notice for quality improvement.
The nameplate(includes Serial Number) is located on the upper left of the cabinet interior.
- 4 – |
05/15 Rev. G 146526 |
2.1 MAIN COMPONENTS - SOLID DOOR FREEZER & REFRIGERATOR
PRODUCT |
SOLID (FULL/HALF) DOOR |
SOLID (FULL/HALF) DOOR |
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FREEZER |
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REFRIGERATOR |
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MODEL |
F23-S / |
F49-S / |
F72-S / |
R23-S / |
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R49-S / |
R72-S / |
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F23-SH |
F49-SH |
F72-SH |
R23-SH |
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R49-SH |
R72-SH |
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Compressor |
NEK2150GK |
CAJ2432Z(A) |
CAJ2446Z(H) |
SK1A1C-L2W |
CAJ4461Y(A) |
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(Tecumseh- |
(Tecumseh- |
(Tecumseh- |
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(Manufacture) |
(Embraco) |
(Samsung-Korea) |
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France) |
France) |
France) |
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Compressor |
LBP 628 |
LBP 808 |
LBP 1219 |
LBP 303 |
HBP 1586 |
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Capacity(kcal/h) |
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Type of Compressor |
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CSR |
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CSIR |
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motor |
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Compressor O.L.P |
T0873/G9 |
GA3PJU00 |
MST00AHN |
4TM795TFBZZ-53 |
GA3SJU81 |
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Compressor Relay |
RVA9AD3C- |
3ARR3*5R* |
3ARR3*3A* |
J531Q34E220M350-3 |
3ARR18A100B |
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121 |
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Starting Capacitor |
189~227 |
315 / |
88 / 160V |
125 / 125V |
250 / 160V |
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/ 165V |
160V |
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Running Capacitor |
25 / 400V |
30 / 400V |
15 / 160V |
12 / 250V |
- |
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Type of Evaporator |
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Cu pipe + Al fin + Blue color coating |
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Evaporator pipe |
9.52mm (3/8") |
12.7mm |
9.52mm (3/8") |
12.7mm |
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Diameter |
(1/2”) |
(1/2”) |
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Cooling Fan Motor |
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IS3225LTSA, |
120V/60Hz |
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Type of Condenser |
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Cu pipe + Al fin |
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Condenser pipe |
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9.52mm (3/8") |
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Diameter |
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Condenser Fan Motor |
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MA7425W1, 120V/60Hz |
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Dryer |
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OD 25.4mm (1"), XH-9, 30g(1.06oz) |
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Temperature Control |
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Thermistor |
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Running Indication |
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Digital Display |
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Interior Temp. |
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Digital Display |
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Indication |
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Interior Lamp |
40W × 1EA |
40W × 2EA |
40W × 1EA |
40W × 2EA |
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(Incandescent lamp) |
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Defrost for evaporator |
Heated defrost (Control of thermistor) |
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Off cycle |
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Defrost sheath heater |
450W |
670W |
944W |
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Defrost pan heater |
60W |
90W |
128W |
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- |
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Drain heater |
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9W |
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- |
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Door switch |
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SP201R-7DR, AC125V |
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Power switch |
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SL112A, AC125V/12A |
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- 5 – |
05/15 Rev. G 146526 |
2.2 MAIN COMPONENTS - GLASS DOOR REFRIGERATOR
PRODUCT |
GLASS (FULL) DOOR REFRIGERATOR |
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MODEL |
R23-G |
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R49-G |
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R72-G |
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Compressor |
SK1A1C-L2W |
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NEK2150GK |
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(Manufacture) |
(Samsung-Korea) |
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(Embraco) |
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Compressor Capacity(kcal/h) |
LBP 303 |
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LBP 628 |
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Type of Compressor |
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CSR |
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motor |
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Compressor O.L.P |
4TM795TFBZZ-53 |
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T0873/G9 |
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Compressor Relay |
J531Q34E220M350-3 |
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RVA9AD3C-121 |
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Starting Capacitor |
125 / 125V |
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189~227 / 165V |
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Running Capacitor |
12 / 250V |
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25 / 400V |
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Type of Evaporator |
Cu pipe + Al fin + Blue color coating |
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Evaporator pipe Diameter |
9.52mm (3/8") |
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12.7mm (1/2”) |
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Cooling Fan Motor |
IS3225LTSA, 120V/60Hz |
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Type of Condenser |
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Cu pipe + Al fin |
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Condenser pipe Diameter |
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9.52mm (3/8") |
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Condenser Fan Motor |
MA7425W1, 120V/60Hz |
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Dryer |
OD 25.4mm (1"), XH-9, 30g(1.06oz) |
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Temperature Control |
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Thermistor |
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Running Indication |
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Digital Display |
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Interior Temp. Indication |
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Digital Display |
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Interior Lamp (LED) |
6W x 1EA |
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6W x 2EA |
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6W x 3EA |
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Defrost for evaporator |
|
|
Off cycle |
|
||
|
|
|
|
|
|
|
Defrost sheath heater |
|
|
|
- |
|
|
|
|
|
|
|
|
|
Defrost pan heater |
|
|
|
- |
|
|
|
|
|
|
|
|
|
Drain heater |
|
|
|
- |
|
|
|
|
|
||||
Door switch |
SP201R-7DR, AC125V |
|
||||
|
|
|
||||
Power switch |
SL112A, AC125V/12A |
|
||||
|
|
|
||||
Light switch |
RL1-3, 16A/250V, ON-OFF |
|
||||
|
|
|
|
|
|
|
- 6 – |
05/15 Rev. G 146526 |
3.1 GENERAL - MERCHANDISERS
PRODUCT |
|
|
|
MERCHANDISERS |
|
|
|
|
|
|
|
|
|
MODEL |
|
GR26H |
|
GR48S |
GR70H |
|
|
|
|
|
|
|
|
Capacity |
|
736 ℓ (26 ft3) |
|
1359 ℓ (48 ft3) |
1982 ℓ (70 ft3) |
|
Net Capacity |
|
677 ℓ (23.9 ft3) |
|
1339 ℓ (47.3 ft3) |
1877 ℓ (66.3 ft3) |
|
Exterior Dimension |
|
(W) |
720 (28.4”) |
|
1,350 (53.2”) |
1,980 (78”) |
|
|
|
|
|
|
|
|
(D) |
844 (33.3”) |
|
780 (30.7”) |
835 (32.9”) |
|
(Including casters |
|
|
||||
Door Handles) |
|
|
|
|
|
|
|
(H) |
2,017 (79.4”) |
|
2,012 (79.2”) |
2,126 (83.7”) |
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
(W) |
640 (25”) |
|
1,280 (50.4”) |
1,885 (74.2”) |
|
|
|
|
|
|
|
Interior Dimension |
|
(D) |
719 (28.3”) |
|
642 (25.3”) |
635 (25”) |
|
|
|
|
|
|
|
|
|
(H) |
1,584 (62.4”) |
|
1,562 (61.5”) |
1,545 (60.8”) |
|
|
|
|
|
|
|
Net Weight |
|
130 (287 lb) |
|
215 (474 lb) |
325 (716 lb) |
|
|
|
|
|
|
|
|
Door Type |
|
Swing 1EA |
|
Sliding 2EA |
Swing 3EA |
|
|
|
|
|
|
|
|
Door Material |
|
Glass + PVC |
|
Glass + PVC |
Glass + Al |
|
|
|
|
|
|
|
|
Shelves |
|
4EA |
|
8EA |
12EA |
|
|
|
|
|
|
|
|
Power Voltage |
|
|
|
AC 115V/60Hz |
|
|
|
|
|
|
|
|
|
Plug in - Installation |
|
|
|
NEMA 5-15P |
|
|
|
|
|
|
|
|
|
Amps |
|
3.9A |
|
10.0A |
11.9A |
|
|
|
|
|
|
|
|
Compressor |
|
1/4 HP |
|
1/2 HP |
1/2 HP |
|
|
|
|
|
|
|
|
Refrigerant |
|
R-134a |
|
R-134a |
R-134a |
|
|
|
|
|
|
||
|
300g (10.6 oz) |
|
460g (16.2 oz) |
500g (17.6 oz) |
||
|
|
|
|
|||
|
|
|
|
|
||
Range of Temperature |
|
0 ~ 4 (32 ~ 40 ) |
|
|||
|
|
|
|
|
||
Door auto-close equipment |
Auto-close for Spring |
|
Auto-close for slope |
Auto-close for Spring |
||
|
|
|
|
|
||
Door stop equipment |
120˚ Stop |
|
- |
120˚ Stop |
||
|
|
|
|
|
||
Air suction equipment |
- |
|
- |
Air damper |
||
|
|
|
|
|
|
|
Caster |
|
Adjust foot 4EA |
|
Adjust foot 6EA |
Adjust foot 6EA |
|
|
|
|
|
|
|
|
Condensing unit |
|
|
|
Sliding Type |
|
|
|
|
|
|
|
||
Door switch |
|
- |
|
- |
- |
|
|
|
|
|
|
||
Power(or Lamp) switch |
|
|
SL112A, AC125V/12A |
|
||
|
|
|
|
|
|
|
Above specifications are subjected to change without prior notice for quality improvement.
The nameplate(includes Serial Number) is located on the upper left of the cabinet interior.
- 7 – |
05/15 Rev. G 146526 |
4.1 MAIN COMPONENTS - MERCHANDISERS
PRODUCT |
|
|
MERCHANDISERS |
|
||
|
|
|
|
|
|
|
MODEL |
GR26H |
|
GR48S |
|
GR70H |
|
|
|
|
|
|
|
|
Compressor |
SK182C-L2U |
|
CAJ4476Y(A) |
|
CAJ4476Y(A) |
|
(Manufacture) |
(SAMSUNG) |
|
(Tecumseh-France) |
|
(Tecumseh-France) |
|
|
|
|
|
|
|
|
Compressor Capacity(kcal/h) |
LBP 256 |
|
HBP 1946 |
|
HBP 1946 |
|
|
|
|
|
|
|
|
Type of Compressor motor |
RSCR |
|
CSIR |
|
CSIR |
|
|
|
|
|
|
|
|
Compressor O.L.P |
4TM444NHBYY |
|
CRA38014 |
|
CRA38014 |
|
|
|
|
|
|
|
|
Compressor Relay |
J531Q32E4R7M1802 |
|
3ARR3*2M* |
|
3ARR3*2M* |
|
|
|
|
|
|
|
|
Starting Capacitor |
- |
|
250 /160V |
|
250 /160V |
|
|
|
|
|
|
|
|
Running Capacitor |
12 /250V |
|
- |
|
|
- |
|
|
|
|
|
|
|
Type of Evaporator |
|
|
Cu pipe + Al fin |
|
||
|
|
|
|
|
||
Evaporator pipe Diameter |
9.52 mm (3/8") |
|
|
12.7mm (1/2”) |
||
|
|
|
|
|
|
|
Cooling Fan Motor |
|
IS3225LTSA, |
120V/60Hz |
|
||
|
|
|
|
|
||
Type of Condenser |
|
|
Cu pipe + Al fin |
|
||
|
|
|
|
|
||
Condenser pipe Diameter |
|
|
9.52 mm (3/8") |
|
||
|
|
|
|
|
|
|
Condenser Fan Motor |
|
|
MA7425W1, |
120V/60Hz |
|
|
|
|
|
||||
Dryer |
OD 25.4mm (1"), XH-9, 30g(1.06oz) |
|
||||
|
|
|
|
|
||
Temperature Control |
Thermostat |
|
Thermostat |
|
Thermostat |
|
(GNF-250L) |
|
(GNF-240L) |
|
(GNF-246L) |
||
|
|
|
||||
Running Indication |
|
- |
|
|
|
|
|
|
|
|
|
|
|
Interior Temp. Indication |
|
- |
|
|
|
|
|
|
|
|
|
|
|
Interior Lamp |
32W × 1EA |
|
32W × 1EA |
|
32W × 2EA |
|
(Fluorescent lamp) |
|
|
||||
|
|
|
|
|
|
|
Ad. Panel Fluorescent Lamp |
20W × 1EA |
|
32W × 1EA |
|
32W × 2EA |
|
|
|
|
|
|
|
|
Ballast |
32W(Double)×1EA |
|
32W(Double)×1EA |
|
32W(Double)×2EA |
|
|
|
|
|
|
|
|
Ballast Name |
B232I120RH-A |
|
B232I120RH-A |
|
B232I120RH-A |
|
(Manufacture) |
(ADVANCE) |
|
(ADVANCE) |
|
(ADVANCE) |
|
Defrost for evaporator |
|
|
Off cycle |
|
||
|
|
|
|
|
|
|
Defrost sheath heater |
- |
|
- |
|
|
- |
|
|
|
|
|
|
|
Defrost pan heater |
- |
|
- |
|
|
- |
|
|
|
|
|
|
|
Drain heater |
- |
|
- |
|
|
- |
|
|
|
|
|
|
|
- 8 – |
05/15 Rev. G 146526 |
2. REFRIGERATION CYCLE
Mechanical refrigeration is accomplished by continuously circulating, evaporating, and condensing a fixed supply of refrigerant in a closed system. Evaporation occurs at allow temperature and pressure while condensation occurs at high temperature and pressure. Thus it is possible to transfer heat fom an area of low temperature (i.e., refrigerated compartment) to an area of high temperature (i.e., surrounding of refrigerator).
CONDENSER
|
|
COMPRESSOR |
CAPILLARY TUBE |
|
|
|
|
|
|
|
|
EVAPORATOR
THE BASE REFRIGERATION CYCLE
Beginning the cycle at the evaporator inlet the low pressure liquid expands, absorbs heat (so refrigerator inner-cabinet is cooled), and evaporates, changing to allow low pressure gas at the evaporator outlet.
The compressor pumps this gas from the evaporator, increases its pressure, and discharges the high pressuredtemperature gas to the condenser.
The condenser lets high pressuredtemperature gas emit the heat (so surrounding of the condenser is warmed) in order to make it condense.
The capillary tube prevents high pressuredtemperature liquid from entering the evaporator in order to lower the pressure in the evaporator and control the flow of refrigerant into the evaporator automatically.
Eventually the desired air temperature in refrigerator inner-cabinet is reached, the thermostat (temperature controller) will break the electrical circuit to the compressor motor and stop the compressor.
- 9 – |
05/15 Rev. G 146526 |
As the temperature of the air rises, the thermostat (or controller) remakes the electrical circuit. The compressor starts, and cycle continues.
The schematic refrigeration (or freezing) cycle of F23/F49/F72/R23/R49/R72/GR26/GR48/GR70 is like below.
MODEL |
COMPRESSOR |
|
|
F23-S/SH, R49/R72-G |
NEK2150GK |
|
|
F49-S/SH |
CAJ2432Z(A) |
|
|
F72-S/SH |
CAJ2446Z(H) |
|
|
R23/R49-S/SH,R23-G |
SK1A1C-L2W |
|
|
R72-S/SH |
CAJ4461Y(A) |
|
|
GR26H |
SK182C-L2U |
|
|
GR48S, GR70H |
CAJ4476Y(A) |
|
|
No. |
Part Name |
Description |
Remark |
|
|
|
|
1 |
COMPRESSOR |
|
|
|
|
|
|
2 |
CONDENSER |
C1220TS-O,H |
|
|
|
|
|
3 |
EVAPORATOR |
C1220TS-O,H |
|
|
|
|
|
4 |
DRYER |
C1220T-H |
|
|
|
|
|
5 |
ACCUMULATOR |
C1220T-1/4H |
|
|
|
|
|
6 |
DISCHARGE PIPE |
C1220T-O |
|
|
|
|
|
7 |
DRYER CONNECT PIPE |
C1220T-O |
|
|
|
|
|
8 |
CAPILLARY TUBE |
C1220T-H |
|
|
|
|
|
9 |
SUCTION PIPE (INNER-CABINET) |
C1220T-O |
|
|
|
|
|
10 |
SUCTION PIPE (COMPRESSOR) |
C1220T-O |
|
|
|
|
|
11 |
CHARGE PIPE (COMPRESSOR) |
C1220T-O |
|
|
|
|
|
12 |
CHARGE PIPE (DRYER) |
C1220T-O |
|
|
|
|
|
- 10 – |
05/15 Rev. G 146526 |
3.TROUBLESHOOTING
1)CHECKING THE POWER SUPPLY
F23 / F49 / F72 / R23 / R49 / R72
Is the power cord |
NO |
Plug in |
|
Plugged in? |
|
||
|
|
||
|
YES |
|
|
|
|
|
|
|
|
|
|
NO
Is the rated voltage 
Correct supplied?
YES
Is the power cord |
NO |
Defective |
|
|
|
||
normal? |
|
|
power cord |
YES
Is the power switch |
NO |
|
|
NORMAL |
|
|
||
“OFF” position? |
|
|
YES
Move to “ON” position
GR26H / GR48S / GR70H
Is the power cord |
NO |
Plug in |
|
Plugged in? |
|
||
|
|
||
|
YES |
|
|
|
|
|
|
|
|
|
|
Is the rated voltage |
NO |
Correct |
|
||
supplied? |
|
|
YES
Is the power cord |
NO |
Defective |
|
power cord |
|
|
||
normal? |
|
|
|
|
YES
NORMAL
- 11 – |
05/15 Rev. G 146526 |
2)CHEKING THE POWER SUPPLY OF CONTROL BOARD
F23 / F49 / F72 / R23 / R49 / R72
Is the rated |
NO |
Check wiring |
|
voltage supplied |
|
||
|
|||
|
|
||
to the C/B? |
|
|
|
|
YES |
|
|
|
|
|
|
|
|
|
|
Does the fuse fail? |
NO |
Is the coil winding |
NO Defective |
||
|
of transformer |
|
transformer |
||
|
|
|
open? |
|
|
|
YES |
|
YES |
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
Defective fuse
NOTES
*C/B: Control Board (Printed Circuit Board)
*Fuse Spec: AC250V, 8A
*Transformer Spec. Primary: AC115V
Secondary: AC12V (Red wire) AC20V (Blue wire)
Is the secondary output volt, of trans, normal
YES
Is the DC 24V supplied to coil part in relay?
YES
Does the contact part in relay continue?
YES
NORMAL
- 12 –
NO |
Defective |
|
transformer |
NO |
Check C/B |
|
NO 
Defective
Relay
05/15 Rev. G 146526
3)CHECKING THE CONTROL PART OF REFRIGERATION CYCLE
F23 / F49 / F72 / R23 / R49 / R72
Check the |
|
|
|
|
|
|
power supply |
|
|
|
|
|
|
|
|
|
Are the sensors in |
NO |
Correct |
|
|
|
|
C/B connected |
|
|
|
|
|
|
|
|
|
|
Is the to comp. |
NO |
|
properly? |
|
|
|
Correct |
|
|
|
|
||
connected properly? |
|
|
|
|
|
|
|
|
YES |
|
|
|
|
|
|
|
|
|
|
|
YES |
|
|
Check the resistance |
NO |
Defective |
|
|
|
|
|
|||
Are the relay |
|
|
of T-Sensor |
|
T-sensor |
|
NO |
Correct |
|
|
|
|
|
& OLP in comp. |
|
|
|
|
||
|
YES |
|
|
|
||
assembled properly? |
|
|
|
|
|
|
YES |
|
|
Is the temp. |
NO |
Defective |
|
|
|
|
displayed in D/B |
|
||
|
|
|
|
MICOM |
|
|
|
|
|
properly? |
|
|
|
Check the |
NO |
Defective |
|
|
|
|
|
|
|
|
|||
continuity of OLP |
|
|
|
|
||
|
OLP |
YES |
|
|
|
|
in compressor |
|
|
|
|
||
|
|
|
|
|
||
YES |
|
|
Check the |
NO |
Temperature |
|
|
|
|
temperature set |
|||
|
|
|
|
resetting |
|
|
|
|
|
point |
|
|
|
Check the |
NO |
|
|
|
|
|
Defective |
|
|
|
|
||
continuity of relay |
|
|
|
|
||
|
relay |
YES |
|
|
|
|
in compressor |
|
|
|
|
||
|
|
|
|
|
|
|
YES |
|
|
Defective compressor |
|
|
|
|
|
|
|
|
|
|
Check the |
|
|
NOTES |
|
|
|
power supply of |
|
|
|
|
|
|
|
|
* C/B: Control Board |
|
|
|
|
control board |
|
|
|
|
|
|
|
|
|
* D/B: Display Board |
|
|
|
|
|
|
* OLP: Over load Protector |
|
||
|
|
|
- 13 – |
|
05/15 Rev. G |
146526 |
GR26H / GR48S / GR70H
Check the power supply
When the |
YES Defective |
|
||||||
thermostat is OFF. |
|
|||||||
Does the comp. |
|
|
|
thermostat |
|
|||
run? |
|
|
|
|
|
|
|
|
|
NO |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Is the to comp. |
NO |
|
|
|
|
|||
connected properly? |
|
|
|
Correct |
|
|||
|
|
|
|
|||||
|
YES |
|
|
|
|
|
|
|
Are the relay |
NO |
|
|
|
|
|||
& OLP in comp. |
Correct |
|
||||||
|
|
|
|
|||||
assembled properly? |
|
|
|
|
||||
|
|
|
|
|
|
|
||
|
YES |
|
|
|
|
|
|
|
Check the |
|
YES |
|
Check the |
NO Defective |
|||
continuity of OLP |
|
|
continuity of relay |
|||||
|
|
|
|
|||||
|
|
|
|
|||||
in compressor |
|
|
|
|
in compressor |
relay |
||
|
NO |
|
|
|
|
|
YES |
|
|
|
|
|
|
|
|
||
Defective OLP |
|
|
|
|
Defective compressor |
|
||
- 14 – |
05/15 Rev. G 146526 |
4)CHECKING THE DEFROST PART
F23 / F49 / F72
Check the power supply
Do the B/M and D- |
NO |
Correct |
Does the B/M |
NO |
Defective |
Sensor located in |
|
continue below |
|
||
|
|
||||
|
|
|
Bi-Metal |
||
|
|
41 (5 ) |
|
||
place? |
|
|
|
|
|
|
|
|
|
|
YES |
|
|
YES |
|
|
Do the wiring to the |
NO |
Check |
Dose the defrost |
NO |
Defective |
heater and B/M |
|
wiring |
output on C/B normal |
|
Control Board |
connected properly? |
|
|
in defrost mode? |
|
|
|
|
|
|
||
YES |
|
|
YES |
|
|
|
|
|
|
|
|
Check the |
NO |
Defective |
Defective MICOM |
|
|
|
|
|
|||
resistance of |
|
D-Sensor |
|
|
|
D-sensor |
|
|
|
|
YES
|
NO Defective |
NOTES |
|
Are the defrost |
* C/B: Control Board |
||
heaters normal? |
|
heater |
* B/M: Bi-Metal |
|
|
||
|
|
|
|
|
|
|
(Temp. Limiting Controller) |
YES
- 15 – |
05/15 Rev. G 146526 |
R23 / R49 / R72
Check the power supply
Do the D-Sensor |
|
NO |
|
Correct |
|
|
|
|
|||
|
|
|
|||
located in place? |
|
|
|
|
|
|
YES |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Check the |
|
NO |
|
Defective |
|
resistance of |
|
|
|||
|
|
|
D-Sensor |
||
D-sensor |
|
|
|
||
|
|
|
|
||
|
YES |
|
|
|
|
Dose the defrost |
|
NO |
|
Defective |
|
output on C/B normal |
|
|
|||
|
|
||||
in defrost mode? |
|
|
|
Control Board |
|
YES
Defective micom
NOTES
* C/B: Control Board
- 16 – |
05/15 Rev. G 146526 |
5)WHEN THE UNIT DOES NOT COOL
All Models
Does the |
NO |
Check |
Is there |
YES |
|
|
compressor run |
|
the control part of |
dust on condenser |
|
Clean |
|
normally? |
|
refrigeration cycle |
fin? |
|
|
|
YES |
|
|
NO |
|
|
|
Is the unit |
NO |
|
Does the cond. |
NO |
Defective |
|
located in a |
Correct |
(eva.) fan motor rotate |
|
|||
level place? |
|
|
normally? |
|
motor, fan |
|
|
|
|
|
|
||
YES |
|
|
YES |
|
|
|
|
|
|
|
|
|
|
Is the temperature |
NO |
Temperature |
Does the |
YES |
Correct |
|
|
refrigerant leak? |
|
|
|||
set point proper? |
|
resetting |
|
|
|
|
|
|
|
|
|
||
YES |
|
|
NO |
|
|
|
Are the goods |
NO |
|
Is the |
YES |
|
|
Correct |
refrigerant line |
Correct |
|
|||
|
|
|
||||
loaded properly? |
|
|
restricted? |
|
|
|
YES |
|
|
NO |
|
Excluding GR26H, GR48S |
|
|
|
|
|
|||
|
|
|
|
|
GR70H |
|
Does the cool air |
YES |
Check |
Is the contact of |
NO |
Defective |
|
door switch normal? |
|
|
||||
|
|
door switch |
|
|||
leak? |
|
door gasket |
|
|
|
|
|
|
|
|
|
||
NO |
|
|
YES |
|
|
|
Does the frost |
YES |
Freezer: Check |
When door closed. |
NO |
Apply spacer |
|
form excessively |
the defrost part |
Are the door S/We pushed |
|
|
||
|
|
by the top of door? |
between door switch |
|
||
in evaporator? |
|
|
|
|||
|
Refrigerator: |
|
and the top of door |
|
||
|
|
|
|
|||
|
|
YES |
|
|
|
|
NO |
|
forced defrost |
Check compressor |
|
||
|
|
|
|
|||
|
|
- 17 – |
|
|
05/15 Rev. G |
146526 |
6)WHEN THERE IS A ABNORMAL NOISE
All Models
Is the unit
located in a NO level place?
|
YES |
|
|
|
Is the high |
YES |
|||
voltage supplied? |
|
|
|
|
NO
Are the pipes |
YES |
|
rattled? |
|
|
NO
Are the parts |
NO |
|
assembled tightly? |
|
|
YES
Correct |
|
|
YES |
Defective |
|||
Are the fans bent? |
|||||||
|
|
|
|||||
|
|
|
fan |
||||
|
|
|
|
|
|
||
Adjust |
|
NO |
NO |
Defective |
|||
|
|||||||
|
|||||||
Do the fans |
|||||||
|
|
|
|||||
voltage |
rotate well? |
|
|
|
fan, motor |
||
|
|
YES |
YES Defective |
||||
|
|
||||||
|
|
||||||
Reform to |
Is there any |
||||||
be free of |
noise in motor? |
|
|
|
motor |
||
contact |
|
|
|
|
|
|
|
|
|
NO |
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
||
|
Comp. is running |
YES |
|
||||
Tighten |
but the unit does |
|
|||||
|
|
|
|
||||
|
not cool |
|
|
|
|
||
|
|
|
|
|
|
|
|
- 18 – |
05/15 Rev. G 146526 |
7)WHEN THE TEMPERATURE DOES NOT DISPLAY
F23 / F49 / F72 / R23 / R49 / R72
Check the power supply
Check the power supply in control board
Is the connect ion |
NO |
Tighten |
||
between C/B and D/B |
||||
|
||||
properly? |
|
|
||
|
YES |
|
|
|
|
|
|
||
Is the micom |
NO |
Tighten |
||
inserted on C/B |
||||
|
||||
properly? |
|
|
||
|
YES |
|
|
|
|
|
|
||
Replace display board |
|
|
||
NOTES
*C/B: Control Board
*D/B: Display Board
- 19 – |
05/15 Rev. G 146526 |
8) WHEN THE LAMP DOES NOT LIGHT |
|
|
|
|
|
|||||
F23 / F49 / F72 / R23 / R49 / R72 |
|
GR26H / GR48S / GR70H |
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Check the |
|
|
|
|
|
Check the |
|
|
|
|
|
|||
|
|
power supply |
|
|
|
power supply |
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Check the |
|
|
|
Adjust the lamp |
|
connecting points |
|
|
|
||
|
|
||||
with socket |
|
for good connection |
|||
|
YES |
NO |
|
|
|
|
|
|
|||
Is the lamp |
|
Defective |
|||
|
|
|
|||
defective? |
|
|
|
||
|
|
|
lamp |
||
|
|
|
|
|
|
|
YES |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Check the |
NO |
|
|
||
continuity of |
|
Defective |
|||
|
|
|
|||
|
|
|
|||
lamp switch |
|
|
|
lamp switch |
|
|
YES |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
When door closed. |
NO |
|
Apply spacer |
||
Are the door S/We pushed |
|
||||
|
|
|
|||
by the top of door? |
between door switch |
||||
and the top of door
YES
Check wiring
* Incandescence Lamp: 40W
Check the |
NO |
Adjust the lamp |
|||
connecting points |
|
|
|||
|
|
||||
with socket |
|
for good connection |
|||
|
YES |
NO |
|
||
|
|
||||
Is the lamp |
Defective |
||||
|
|
||||
defective? |
|
|
|||
|
|
lamp |
|||
|
|
|
|
||
|
YES |
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
Check the |
NO |
|
|||
continuity of |
Defective |
||||
|
|
||||
|
|
||||
lamp switch |
|
|
lamp switch |
||
|
YES |
|
|
|
|
|
|
|
|
||
|
|
|
|
||
Check the |
NO |
Defective |
|||
continuity of |
|
|
|||
|
|
|
|||
ballast |
ballast |
|
|
||
|
YES |
|
|
|
|
|
|
|
Check wiring |
|
|
* Fluorescent Lamp: 32W
- 20 – |
05/15 Rev. G 146526 |
9) CHECKING SENSOR
Sensor assembly consists of T-sensor (lead wire: orange) and D-sensor (lead wire: blue).
The T-sensor is used for cabinet temperature control and the D-sensor is used for defrost control.
The resistance of the sensor varies depending on temperature.
If you Immerse the sensor in a glass containing ice water for 2 minutes and then check for the resistance between sensor leads, the normal reading is 7.88 (T-sensor) / 30 (D-sensor).
|
|
Resistance ( ) |
|
Temperature ( / ) |
|
|
|
T-sensor (±6.5%) |
|
D-sensor (±5.5%) |
|
|
|
||
|
|
|
|
-5 / -21 |
23.04 |
|
79.17 |
|
|
|
|
0 / -18 |
19.76 |
|
68.92 |
|
|
|
|
10 / -12 |
14.65 |
|
52.61 |
|
|
|
|
23 / -5 |
10.10 |
|
37.55 |
|
|
|
|
32 / 0 |
7.88 |
|
30.00 |
|
|
|
|
41 / 5 |
6.20 |
|
24.13 |
|
|
|
|
50 / 10 |
7.91 |
|
19.53 |
|
|
|
|
60 / 16 |
3.82 |
|
15.56 |
|
|
|
|
70 / 21 |
3.00 |
|
12.48 |
|
|
|
|
- 21 – |
05/15 Rev. G 146526 |
4. FEATURE CHART
1) F23/R23-S
2) F49/R49-S
- 22 – |
05/15 Rev. G 146526 |
3) F72/R72-S
4) F23/R23-SH
- 23 – |
05/15 Rev. G 146526 |
5) F49/R49-SH
6) F72/R72-SH
- 24 – |
05/15 Rev. G 146526 |
7) R23-G
8) R49-G
- 25 – |
05/15 Rev. G 146526 |
9) R72-G
10) GR26H |
|
|
|
|
FAN COVER |
COOLING FAN |
|
|
COOLING FAN MOTOR |
||
|
|
||
|
BALLAST |
|
|
|
AD. PANEL |
EVAPORATOR |
|
|
|
||
AD. Panel |
LAMP |
|
|
COVER LAMP |
WATER COLLECTOR |
||
|
|||
|
DRAIN HOSE |
||
|
|
||
|
DOOR FRAME |
|
|
|
LAMP |
SHELF SUPPORT |
|
|
|
||
Door (Glass) |
|
SHELF |
|
|
DOOR HANDLE |
|
|
Door handle |
|
|
|
|
LOWER GRILLE |
|
|
Lower grille |
CONDENSER |
DRYER |
|
SUCTION PIPE |
|||
|
|
Adjust foot 
CONDENSER FAN MOTOR MOTOR BRKT |
COMPRESSOR |
[ Front view ] |
[ Side view ] |
|
|
|
|
- 26 – |
05/15 Rev. G 146526 |
|
11) GR48S |
|
|
|
COOLING FAN COVER |
COOLING FAN |
|
BALLAST |
COOLING FAN MOTOR |
|
AD. PANEL |
EVAPORATOR |
|
|
|
AD. Panel |
LAMP |
|
|
WATER COLLECTOR |
|
|
|
|
|
LAMP |
DRAIN HOSE |
|
|
|
|
LAMP TUBE |
SHELF SUPPORT |
Door (Glass) |
|
SHELF |
|
DOOR HANDLE |
|
Door handle |
|
|
|
DOOR FRAME |
|
|
CENTER POST |
|
Lower grille |
LOWER GRILL |
DRIER |
|
||
|
CONDENSER |
SUCTION PIPE |
|
|
Adjust foot |
|
|
|
|
|
|
|
CONDENSER FAN MOTOR |
|
COMPRESSOR |
|||||
|
|
||||||
|
|
|
|
||||
|
|
|
MOTOR BRKT |
||||
[ Front view ] [ Side view ]
12) GR70H
AD. Panel
Door(Glass) |
Door handle |
Lower grille |
Adjust foot
[ Front view ] |
[ Side view ] |
- 27 – |
05/15 Rev. G 146526 |
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