25
8 - SYSTEM TEST
System testing provides the ability to check the control operation.
The control enters a 20-minute test mode by momentarily shor-
ting the test pins (see Figs. 9-12). All time delays are reduced
by a factor of 15.
8.1 - 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 entering the test mode.
The alarm relay will also power on and off during test mode
(see Tables 13 and 14). 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.
Table 13 - C control current LED status and alarm
relay operations
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
Fast flash Lockout Closed
Slow flash Over/under voltage shutdown Open
(closed after 15 minutes)
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 Cycling code 7
shutdown in memory
Flashing code 8 Test mode - PM in memory Cycling code 8
Flashing code 9 Test mode - FP1/FP2 Cycling code 9
swapped fault in memory
Legend
CO - Condensate overflow
FP - Freeze protection
HP - High pressure
LED - Light-emitting diode
LP - Low pressure
PM - Performance Monitor
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 14 - C control LED code and fault descriptions
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
3Low pressure switch LP open for 30 continuous seconds
before or during a call (bypassed for
first 60 seconds)
4Freeze protection coax - FP1 FP1 below temp. limit for 30 continuous
seconds (bypassed for first 60 seconds
of operation)
5Freeze protection air coil - FP2 FP2 below temp. limit for 30 continuous
seconds (bypassed for first 60 seconds
of operation)
6 Condensate overflow Sense overflow (grounded) for 30
continuous seconds
7Over/under voltage “R” power supply is <19 V a.c. or
(Autoreset) shutdown >30 V a.c.
8 PM warning Performance Monitor warning has
occurred
9 FP1 and FP2 thermistors FP1 temperature is higher than FP2 in
are swapped heating/test mode, or FP2 temperature
is higher than FP1 in cooling/test mode.
Legend
FP - Freeze protection
HP - High pressure
LED - Light-emitting diode
LP - Low pressure
PM - Performance Monitor
8.2 - 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 thermostat 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.
8.3 - Aquazone Deluxe D control LED indicators
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 control
and appear as 1 fast flash alternating with a 10-second pause
(see Table 15).
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