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Table 15 - Aquazone D control current LED status and alarm relay operations
Description Status LED Test LED Fault LED Alarm relay
(Green) (Yellow) (Red)
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,
...)
D control is non-functional 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 T-stat inputs 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 10-second fault LED pause.
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 10-second pause. This sequence will repeat continually until the fault is cleared.
9 - 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 compressor.
To avoid leakage of compressor oil, the refrigerant lines of
the compressor must be sealed after it is removed.
IMPORTANT: All refrigerant discharged from this unit must
be recovered without exception. Technicians must follow
industry-accepted guidelines and all local, state and federal
statutes for the recovery and disposal of refrigerants.
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 and national profi-
ciency requirements.
IMPORTANT: To prevent injury or death due to electrical
shock or contact with moving parts, open unit disconnect
switch before servicing unit.
9.1 - Filters
Filters must be clean for maximum performance. Inspect filters
every month under normal operating conditions. Replace when
necessary.
IMPORTANT: Units should never be operated without a filter.
9.2 - 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 frequently if
the unit is located in a “dirty” environment. Keep the heat
exchanger 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 105 kPa during the summer and 275 kPa
during the winter.
Check P trap frequently for proper operation.
CAUTION: To avoid fouled machinery and extensive unit
clean-up, DO NOT operate units without filters in place. DO
NOT use equipment as a temporary heat source during
construction.
9.3 - Condensate drain pans
Check condensate drain pans for algae growth twice a year. If
algae growth is apparent, consult a water treatment specialist
for proper chemical treatment. Applying an algaecide every
three months will typically eliminate algae problems in most
locations.
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