PROBLEM
PROBABLE CAUSE
CORRECTION
Product zone | 1.CONTROL SETTING TOO HIGH. | 1.ADJUST |
temperature too high. | 2.INADEQUATE AIR CIRCULATION. | 2.REARRANGE PRODUCT LOAD TO |
|
| IMPROVE AIR CIRCULATION. |
| 3.DIRTY CONDENSER | 3.CLEAN CONDENSER COIL |
|
| |
|
|
|
Suction line frosted or | 1.OVERCHARGE OF REFRIGERANT. | 1.EVACUATE AND |
sweating. | 2.EVAPORATOR FAN NOT RUNNING. | 2.DETERMINE REASON AND CORRECT. |
| 3.EXPANSION VALVE STUCK OPEN. | 3.CLEAN VALVE,EVACUATE AND RE- |
| 4.EXPANSION VALVE SUPERHEAT TOO LOW. | CHARGE. |
| 4.ADJUST SUPERHEAT TO REQUIRED | |
|
| SETTING |
|
|
|
Liquid line frosted, | 1.RESTRICTION IN DRIER STRAINER. | 1.REPLACE DRIER,EVACUATE AND RE- |
cold, or sweating. |
| CHARGE |
| 2.LIQUID LINE SERVICE VALVE PARTIALLY | 2.OPEN VALVE FULLY OR REPLACE IF |
| NECESSARY. | |
| CLOSED. | |
|
| |
|
|
|
Noisy condensing unit. | 1.LOOSE PARTS OR MOUNTINGS. | 1.TIGHTEN ALL MOUNTING PARTS AND |
|
| SHROUD COVER. |
| 2.TUBING RATTLE OR VIBRATION. | 2.REFORM TUBING TO BE FREE OF |
|
| CONTACT. |
| 3.BENT FAN BLADE CAUSING EXCESSIVE | 3.REPLACE FAN BLADE. |
| VIBRATION. |
|
| 4.FAN MOTOR BEARINGS WORN. | 4.REPLACE FAN MOTOR. |
|
|
|
THERMOMETER READS | 1.CALIBRATION | 1.CONSULT OPERATIONS MANUAL AND |
DIFFERENT THAN ACTUAL |
| CALIBRATE |
TEMPERATURE | 2.DEFECTIVE | 2.REPLACE |
| ||
|
| |
WATER LEAK INSIDE UNIT | 1.CONDENSATE DRAIN PAN NOT INSTALLED | 1.CONSULT OPERATION MANUAL FOR |
| PROPERLY | INSTALL INSTRUCTION |
| 2.UNIT NOT LEVEL | 2.MAKE SURE UNIT IS LEVEL OR PITCHED |
|
| BACK SLIGHTLY |
| 3.DRAIN PAN MISALIGNED | 3.MAKE SURE DRAIN PAN IS ALIGNED |
| PROPERLY | |
| 4.DFECTIVE DRAIN PAN | |
| 4.REPLACE | |
|
| |
DOORS MISALIGNED | 1.SHIFTED DURING SHIPPING | 1.REFER TO OPERATION MANUAL FOR |
|
| HINGE ADJUSTMENT |
|
|
|
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