TABLE 37: COOLING SUPERHEAT 10 TON
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| SUCTION SUPERHEAT °F |
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OUTDOOR |
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| INDOOR WB TEMP °F |
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TEMP °F |
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| 55 |
| 57 | 59 | 61 | 63 |
| 65 | 67 | 69 |
| 71 | 73 | 75 |
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65 | 41.0 |
| 40.9 | 40.7 | 40.6 | 40.5 |
| 40.4 | 40.3 | 40.1 |
| 40.0 | 39.9 | 39.8 |
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70 | 38.3 |
| 38.2 | 38.2 | 38.2 | 38.1 |
| 38.1 | 38.1 | 38.0 |
| 38.0 | 38.0 | 37.9 |
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75 | 35.6 |
| 35.6 | 35.7 | 35.7 | 35.8 |
| 35.8 | 35.9 | 35.9 |
| 36.0 | 36.0 | 36.1 |
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80 | 25.7 |
| 26.7 | 27.6 | 28.5 | 29.5 |
| 30.4 | 31.3 | 32.3 |
| 33.2 | 34.1 | 35.1 |
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85 | 15.9 |
| 17.7 | 19.5 | 21.3 | 23.2 |
| 25.0 | 26.8 | 28.6 |
| 30.4 | 32.3 | 34.1 |
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90 | 14.4 |
| 16.1 | 17.8 | 19.5 | 21.1 |
| 22.8 | 24.5 | 26.2 |
| 27.9 | 29.5 | 31.2 |
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95 | 13.0 |
| 14.5 | 16.0 | 17.6 | 19.1 |
| 20.7 | 22.2 | 23.7 |
| 25.3 | 26.8 | 28.4 |
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100 | 9.8 |
| 11.4 | 13.0 | 14.5 | 16.1 |
| 17.7 | 19.3 | 20.9 |
| 22.5 | 24.0 | 25.6 |
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105 | 6.6 |
| 8.2 | 9.9 | 11.5 | 13.1 |
| 14.8 | 16.4 | 18.0 |
| 19.6 | 21.3 | 22.9 |
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110 | 4.6 |
| 5.9 | 7.2 | 8.5 | 9.8 |
| 11.1 | 12.4 | 13.7 |
| 14.9 | 16.2 | 17.5 |
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115 | 2.5 |
| 3.5 | 4.5 | 5.4 | 6.4 |
| 7.4 | 8.3 | 9.3 |
| 10.3 | 11.2 | 12.2 |
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TROUBLESHOOTING |
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| PREDATOR® FLASH CODES |
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Troubleshooting of components may require open- ing the electrical control box with the power con- nected to the unit. Use extreme care when working with live circuits! Check the unit name- plate for the correct line voltage and set the voltme- ter to the correct range before making any connections with line terminals.
When not necessary, shut off all electric power to the unit prior to any of the following maintenance proce- dures so as to prevent personal injury.
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dan- gerous operation which could cause injury to person and/or damage unit components. Verify proper oper- ation after servicing.
Various flash codes are utilized by the unit control board (UCB) to aid in troubleshooting. Flash codes are distinguished by the short on and off cycle used (approximately 200ms on and 200ms off). To show normal operation, the control board flashes a 1 second on, 1 second off "heartbeat" during normal operation. This is to verify that the UCB is functioning correctly. Do not confuse this with an error flash code. To prevent confusion, a
Alarm condition codes are flashed on the UCB lower left Red LED, See Figure 23. While the alarm code is being flashed, it will also be shown by the other LEDs: lit continuously while the alarm is being flashed. The total of the continuously lit LEDs equates to the number of flashes, and is shown in the table. Pressing and releasing the LAST ERROR button on the UCB can check the alarm history. The UCB will cycle through the last five (5) alarms, most recent to oldest, separating each alarm flash code by approximately 2 seconds. In all cases, a flashing Green LED will be used to indicate
In some cases, it may be necessary to "zero" the ASCD for the compressors in order to perform troubleshooting. To reset all ASCDs for one cycle, press and release the UCB TEST/ RESET button once.
Flash codes that do and do not represent alarms are listed in Table 38.
Unitary Products Group | 39 |