Carrier AQUAZONE 50HQL072-120, Installation, Start-Up And Service Instructions Manual

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Stage 2. When the call is satisfied at the thermostat the unit
will continue to run in Heating Stage 1 until the call is
removed or satisfied, shutting down the unit.
NOTE: Not all units have two-stage heating functionality.
REHEAT MODE — A call from the humidistat/dehumidis-
tat to the (H) terminal of the Deluxe D control board will
bring the unit on in Reheat mode if there is no call for cool-
ing at the thermostat. When the humidistat/dehumidistat call
is removed or satisfied the unit will shut down.
NOTE: Cooling always overrides Reheat mode. In the
Cooling mode, the unit cools and dehumidifies. If the cool-
ing thermostat is satisfied but there is still a call for dehu-
midification, the unit will continue to operate in Reheat
mode.
SYSTEM TEST
System testing provides the ability to check the control
operation. The control enters a 20-minute Test mode by mo-
mentarily shorting the test pins. All time delays are in-
creased 15 times.
Test Mode —
To enter Test mode on Complete C or De-
luxe D controls, cycle the power 3 times within 60 seconds.
The LED (light-emitting diode) will flash a code representing
the last fault when entering the Test mode. The alarm relay will
also power on and off during Test mode. See Tables 24-26. To
exit Test mode, short the terminals for 3 seconds or cycle the
power 3 times within 60 seconds.
NOTE: The Deluxe D control has a flashing code and alarm
relay cycling code that will both have the same numerical
label. For example, flashing code 1 will have an alarm relay
cycling code 1. Code 1 indicates the control has not faulted
since the last power off to power on sequence.
Retry Mode —
In Retry mode, the status LED will start to
flash slowly to signal that the control is trying to recover from
an input fault. The control will stage off the outputs and try to
again satisfy the thermostat used to terminal Y. Once the ther-
mostat input calls are satisfied, the control will continue normal
operation.
NOTE: If 3 consecutive faults occur without satisfying the
thermostat input call to terminal Y, the control will go into
lockout mode. The last fault causing the lockout is stored in
memory and can be viewed by entering Test mode.
Aquazone™ Deluxe D Control LED Indica-
tors —
There are 3 LED indicators on the Deluxe D control:
STATUS LED — Status LED indicates the current status or
mode of the Deluxe D control. The Status LED light is green.
TEST LED — Test LED will be activated any time the De-
luxe D control is in Test mode. The Test LED light is yellow.
FAULT LED — Fault LED light is red. The fault LED will
always flash a code representing the last fault in memory. If
there is no fault in memory, the fault LED will flash code 1 on
the and appear as 1 fast flash alternating with a 10-second
pause. See Table 26.
Table 24 — Complete C Control Current LED Status
and Alarm Relay Operations
LEGEND
NOTES:
1. Slow flash is 1 flash every 2 seconds.
2. Fast flash is 2 flashes every 1 second.
3. EXAMPLE: “Flashing Code 2
” is represented by 2 fast flashes
followed by a 10-second pause. This sequence will repeat con-
tinually until the fault is cleared.
LED STATUS DESCRIPTION OF OPERATION ALARM RELAY
On
Normal Mode Open
Normal Mode with
PM Warning
Cycle
(closed 5 sec.,
Open 25 sec.)
Off
Complete C Control is
non-functional
Open
Slow Flash
Fault Retry Open
Over/Under Voltage Shutdown
Open
(Closed after
15 minutes)
Fast Flash Lockout Closed
Flashing Code 1 Test Mode — No fault in memory Cycling Code 1
Flashing Code 2 Test Mode — HP Fault in memory Cycling Code 2
Flashing Code 3 Test Mode — LP Fault in memory Cycling Code 3
Flashing Code 4 Test Mode — FP1 Fault in memory Cycling Code 4
Flashing Code 5 Test Mode — FP2 Fault in memory Cycling Code 5
Flashing Code 6 Test Mode — CO Fault in memory Cycling Code 6
Flashing Code 7
Test Mode — Over/Under
shutdown in memory
Cycling Code 7
Flashing Code 8 Test Mode — PM in memory Cycling Code 8
Flashing Code 9
Test Mode — FP1/FP2
Swapped fault in memory
Cycling Code 9
CO — Condensate Overflow
FP — Freeze Protection
HP — High Pressure
LED — Light-Emitting Diode
LP — Low Pressure
PM — Performance Monitor
Table 25 — Complete C Control LED Code and
Fault Descriptions
LEGEND
LED
CODE
FAULT DESCRIPTION
1 No fault in memory There has been no fault since
the last power-down to power-up
sequence
2 High-Pressure Switch HP Open Instantly
3 Low-Pressure Switch LP open for 30 continuous sec-
onds before or during a call
(bypassed for first 60 seconds)
4 Freeze Protection Coax
— FP1 FP1 below Temp limit for 30 con-
tinuous seconds (bypassed for
first 60 seconds of operation)
5 Freeze Protection Air Coil
— FP2 FP2 below Temp limit for 30 con-
tinuous seconds (bypassed for
first 60 seconds of operation)
6 Condensate overflow Sense overflow (grounded) for
30 continuous seconds
7
(Autoreset)
Over/Under Voltage
Shutdown "R" power supply is <19VAC or
>30VAC
8 PM Warning Performance Monitor Warning
has occurred.
9 FP1 and FP2 Thermistors
are swapped FP1 temperature is higher than
FP2 in heating/test mode, or FP2
temperature is higher than FP1
in cooling/test mode.
CO — Condensate Overflow
FP — Freeze Protection
HP — High Pressure
LED — Light-Emitting Diode
PM — Performance Monitor