TROUBLESHOOTING
See Table 6 for problems and possible solutions.
Table 6 Ð Troubleshooting
PROBLEM |
| POTENTIAL CAUSE |
| SOLUTION | |
| 1. | Fan belts are slipping or broken. | 1. | Check and replace belts as necessary. | |
Unit is tripping on | 2. | Fan is not delivering adequate air for condenser. | 2. | Check air¯ow (see Table 2)*. | |
3. | 3. | Check damper operation and adjust as required. | |||
| (if equipped). |
|
| ||
or high discharge | 4. | Dirty coil or plugged or restricted air ®lter and/or | 4. | Check and clean coil, ®lter, and louver as required. | |
pressure is noted. |
| louvers. |
|
| |
| 5. | Service valve(s) is closed. | 5. | Open valve(s) and check for restrictions in | |
|
|
|
| refrigerant lines. | |
Compressor or | 1. | Dirty coil or plugged or restricted air ®lter and/or | 1. | Check and clean coil, ®lter, and louver as required. | |
| louvers. |
|
| ||
evaporator is |
|
|
| ||
2. | Air¯ow is not adequate. | 2. | Check air¯ow and determine if proper subcooling | ||
losing capacity. | |||||
|
|
| is provided. | ||
|
|
|
| ||
Unit is noisy. | 1. | Air¯ow is turned too high. | 1. | Slow down motor and check discharge pressure. | |
2. | Belt and pulley are not properly aligned. | 2. | Check and adjust alignment. | ||
| 3. | Proper vibration isolation has not been applied. | 3. | Isolate unit properly. | |
Water drips from | 1. | Rain water drain not functioning properly. | 1. | Clean drain and check drain operation. | |
the unit. | 2. | Unit is not insulated to prevent condensation. | 2. | Insulate unit as required. | |
Fan motor trips | Air¯ow is set too high for motor (motor amps ex- | Slow motor down and check discharge | |||
on internal | pressure. | ||||
ceed nameplate value). | |||||
protection. |
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| |||
|
|
|
|
*Air¯ow should be within the range shown in Table 2, and should also be as close as possible to nominal air¯ow shown in Table 2 for optimum performance.
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