Table 12 — Aquazone™ Deluxe D Control Current LED Status and Alarm Relay Operations
DESCRIPTION | STATUS LED | TEST LED | FAULT LED (Red) | ALARM RELAY | |
(Green) | (Yellow) | ||||
|
|
| |||
Normal Mode | On | Off | Flash Last Fault Code in Memory | Open | |
Normal Mode with PM | On | Off | Flashing Code 8 | Cycle (closed 5 sec, | |
open 25 sec, …) | |||||
|
|
|
| ||
Control is | Off | Off | Off | Open | |
Test Mode | — | On | Flash Last Fault Code in Memory | Cycling Appropriate Code | |
Night Setback | Flashing Code 2 | — | Flash Last Fault Code in Memory | — | |
ESD | Flashing Code 3 | — | Flash Last Fault Code in Memory | — | |
Invalid | Flashing Code 4 | — | Flash Last Fault Code in Memory | — | |
No Fault in Memory | On | Off | Flashing Code 1 | Open | |
HP Fault | Slow Flash | Off | Flashing Code 2 | Open | |
LP Fault | Slow Flash | Off | Flashing Code 3 | Open | |
FP1 Fault | Slow Flash | Off | Flashing Code 4 | Open | |
FP2 Fault | Slow Flash | Off | Flashing Code 5 | Open | |
CO Fault | Slow Flash | Off | Flashing Code 6 | Open | |
Over/Under Voltage | Slow Flash | Off | Flashing Code 7 | Open (closed after 15 minutes) | |
HP Lockout | Fast Flash | Off | Flashing Code 2 | Closed | |
LP Lockout | Fast Flash | Off | Flashing Code 3 | Closed | |
FP1 Lockout | Fast Flash | Off | Flashing Code 4 | Closed | |
FP2 Lockout | Fast Flash | Off | Flashing Code 5 | Closed | |
CO Lockout | Fast Flash | Off | Flashing Code 6 | Closed |
LEGEND
CO — Condensate Overflow
ESD — Emergency Shutdown
FP — Freeze Protection
HP — High Pressure
LP — Low Pressure
PM — Performance Monitor
NOTES:
1.If there is no fault in memory, the Fault LED will flash code 1.
2.Codes will be displayed with a
3.Slow flash is 1 flash every 2 seconds.
4.Fast flash is 2 flashes every 1 second.
5.EXAMPLE: “Flashing Code 2” is represented by 2 fast flashes followed by a
SERVICE
Perform the procedures outlined below periodically, as indicated.
IMPORTANT: When a compressor is removed from this unit, system refrigerant circuit oil will remain in the com- pressor. To avoid leakage of compressor oil, the refrigerant lines of the compressor must be sealed after it is removed.
IMPORTANT: To avoid the release of refrigerant into the atmosphere, the refrigerant circuit of this unit must only be serviced by technicians which meet local, state and federal proficiency requirements.
IMPORTANT: All refrigerant discharged from this unit must be recovered without exception. Technicians must fol- low industry accepted guidelines and all local, state and fed- eral statutes for the recovery and disposal of refrigerants.
WARNING
To prevent injury or death due to electrical shock or contact with moving parts, open unit disconnect switch before ser- vicing unit.
Water Coil — Keep all air out of the water coil. Check open loop systems to be sure the well head is not allowing air to infiltrate the water line. Always keep lines airtight.
Inspect heat exchangers regularly, and clean more frequent- ly if the unit is located in a “dirty” environment. The heat exchanger should be kept full of water at all times. Open loop systems should have an inverted P trap placed in the discharge line to keep water in the heat exchanger during off cycles. Closed loop systems must have a minimum of 103 kPa during the summer and 276 kPa during the winter.
Check P trap frequently for proper operation.
CAUTION
To avoid fouled machinery and extensive unit
Refrigerant System — Verify air and water flow rates are at proper levels before servicing. To maintain sealed circuit- ry integrity, do not install service gages unless unit operation appears abnormal.
Condenser Cleaning —
Local water conditions may cause excessive fouling or pitting of tubes. Condenser tubes should therefore be cleaned at least once a year, or more often if the water is contaminated.
Proper water treatment can minimize tube fouling and pitting. If such conditions are anticipated, water treatment analysis is recommended. Refer to the Carrier System Design Manual, Part 5, for general water conditioning information.
CAUTION
Follow all safety codes. Wear safety glasses and rubber gloves when using inhibited hydrochloric acid solution. Observe and follow acid manufacturer’s instructions.
Clean condensers with an inhibited hydrochloric acid solu- tion. The acid can stain hands and clothing, damage concrete, and, without inhibitor, damage steel. Cover surroundings to guard against splashing. Vapors from vent pipe are not harmful,
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