33
EMERGENCY HEAT — In Emergency Heat mode, the Fan
Enable and Fan Speed relays are turned on. The EH1 output is
turned on immediately. With continuing Emergency Heat de-
mand, EH2 will turn on after 5 minutes. Fan Enable and Fan
Speed relays are turned off after a 60-second delay. The control
reverts to Standby mode.
Output EH1, EH2, Fan Enable, and Fan Speed will be ON if
the G input is not active during Emergency Heat mode.
COOLING STAGE 1 — In Cooling Stage 1 mode, the Fan
Enable, compressor and RV relays are turned on immediately.
If configured as stage 2 (DIP switch set to OFF) then the com-
pressor and fan will not turn on until there is a stage 2 demand.
The Fan Enable and compressor relays are turned off immedi-
ately when the Cooling Stage 1 demand is removed. The con-
trol reverts to Standby mode. The RV relay remains on until
there is a heating demand. If there is a master/slave or dual
compressor application, all compressor relays and related func-
tions will track with their associated DIP switch 2 on S1.
COOLING STAGE 2 — In Cooling Stage 2 mode, the Fan
Enable, compressor and RV relays remain on. The Fan Speed
relay is turned on immediately and turned off once the Cooling
Stage 2 demand is removed. The control reverts to Cooling
Stage 1 mode. If there is a master/slave or dual compressor ap-
plication, all compressor relays and related functions will track
with their associated DIP switch 2 on S1.
NIGHT LOW LIMIT (NLL) STAGED HEATING — In NLL
staged Heating mode, the override (OVR) input becomes
active and is recognized as a call for heating and the control
will immediately go into a Heating Stage 1 mode. With an
additional 30 minutes of NLL demand, the control will go into
Heating Stage 2 mode. With another additional 30 minutes of
NLL demand, the control will go into Heating Stage 3 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 increased
15 times.
Test Mode —
To enter Test mode on C or D controls, cycle
the power 3 times within 60 seconds. The LED (light-emitting
diode) will flash a code representing the last fault when enter-
ing the Test mode. The alarm relay will also power on and off
during Test mode. See Tables 11-13. To exit Test mode, short
the terminals for 3 seconds or cycle the power 3 times within
60 seconds.
NOTE: 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 D Control:
STATUS LED — Status LED indicates the current status or
mode of the D control. The Status LED light is green.
TEST LED — Test LED will be activated any time the 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 13.
Table 11 — 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 continually until the fault is
cleared.
Table 12 — C Control LED Code and
Fault Descriptions
LEGEND
LED STATUS
DESCRIPTION OF OPERATION
ALARM RELAY
On
Normal Mode
Open
Normal Mode with
PM Warning
Cycle
(closed 5 sec.,
Open 25 sec.)
Off
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
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
Summary of Contents for AQUAZONE VQL
Page 15: ...15 AQUAZONE THERMOSTAT Fig 8A 50HQL072 120 and 50VQL160 With Complete C Controls Typical ...
Page 16: ...16 AQUAZONE THERMOSTAT Fig 8B 50HQL072 120 and 50VQL160 with Deluxe D Controls Typical ...
Page 17: ...17 AQUAZONE THERMOSTAT Fig 9A 50VQL080 120 with Complete C Controls Typical ...
Page 18: ...18 AQUAZONE THERMOSTAT Fig 9B 50VQL080 120 with Deluxe D Controls Typical ...
Page 19: ...19 AQUAZONE THERMOSTAT Fig 10A 50VQL200 300 with Complete C Controls Typical ...
Page 20: ...20 AQUAZONE THERMOSTAT Fig 10B 50VQL200 300 with Deluxe D Controls Typical ...