Honeywell AQ250 Series Quick Installation Manual page 13

DIAGNOSTIC LED
This light is used by the AQ250 to communicate diagnostic
data to the user:
• Constantly ON indicates that the unit is working properly.
• Constant, fast blinking indicates that the unit is in the Auto
Test mode; constant, slow blinking indicates that Auto Test
mode has been paused
• Coded blinking is used to communicate an error code to
the user. Refer to the Troubleshooting section of these
instructions for an explanation of these codes.
NOTE: The Diagnostic LED is OFF when the AQ250 Control
Panel is not powered.
If this is the first time the AQ250 has been started:
1. Remove the front cover of the AQ250 by loosening the
4 captive slot-Phillips screws.
2. Remove the AQ1500B0 Control Module's DIP switch
cover (refer to Figure 15 for the DIP switch cover loca-
tion)
3. Check to make sure that the LED labelled "Diagnostic"
is steadily illuminated (no blinking)
4. To begin the Auto Test press on the "Test" button until
you feel a "click". The AQ250 will now begin the Auto
Test routine and the Diagnostic LED on the AQ1500B0
Control Module will blink quickly.
5. Pressing the Test button at any time during the Auto
Test routine will pause the routine indefinitely. While
paused, the Diagnostic LED blinks slowly
6. Pressing the Test button while the Auto Test routine is
paused will advance the routine to the start of the next
step in the routine (testing the next output) and the Auto
Test routine will resume its test procedure.
7. When the Auto Test routine is completed, the Diagnostic
LED returns to a constant ON status (no blinking).
8. To test each of the zone outputs (pumps or valves) indi-
vidually, proceed to Section B) below to run the Auto
Test feature for each AQ155 / AQ157 Zoning Module
attached to the AQ1500B0 Control Module.
SEQUENCE OF OPERATION—AQ1500B0 CONTROL MODULE
1. When the Test button is pressed, ALL space heating
zones connected to the Control Module are energized
and remain energized for the duration of the Auto Test
routine
2. At the same time, the "Diagnostic" LED on the
AQ1500B0 Control Module begins to blink quickly and
the "ZR" relay is energized for 15 seconds, then shuts
off
3. Following that, the "BOILER" relay is energized for 15
seconds, then shuts off
4. Following that, the "AUX" relay is energized for 15 sec-
onds, then shuts off
5. Following that, the "DHW" relay is energized for 15 sec-
onds, then shuts off
6. Following that, the "Boiler" T-T dry contacts are ener-
gized for 15 seconds, then re-opened
7. Following that, AQ1500B0 exits the Auto Test routine
and the "Diagnostic" LED on the Module returns to
steady illumination (no blinking)
B) AUTO TEST - AQ155 / AQ157 ZONING MODULES
Auto Test operation for Zoning Modules enables the installer
to test all zones wired to the Zoning Module by sequentially
activating the equipment connected to each zone output
(pump or valve) for 15 seconds. Each step of the Auto Test
routine may be paused or skipped by pressing the Test button.
AQ250 SERIES HYDRONIC CONTROL PANELS
ZONING MODULE DIAGNOSTIC LED
The LED labeled "DIAGNOSTIC"—located above the DIP
switches on the AQ155 / AQ157 Zoning Modules - is used for
communicating diagnostic data to the Installer.
Refer to the Troubleshooting Section of this Quick Start
Manual for a description of the Diagnostic LED error codes
(blinking rates).
NOTE: The Diagnostic LED is OFF when the AQ155 /
AQ157 Zoning Module is not powered.
If this is the first time the AQ250 Control Panel has been
started:
1. With the front cover of the AQ250 Control Panel
removed and set aside, remove the AQ Zoning Module
DIP switch cover (refer to Figure 15 for the DIP switch
cover location)
2. Check to make sure that the LED labelled "Diagnostic"
is steadily illuminated (no blinking)
3. Press on the "Test" button until you feel a "click". The
AQ155 / AQ157 Zoning Module will now begin the Auto
Test routine, and the Diagnostic LED on the Zoning
Module will blink quickly
4. Pressing the Test button at any time during the Auto
Test routine will pause the routine indefinitely. While
paused, the Diagnostic LED blinks slowly
5. Pressing the Test button while the Auto Test routine is
paused will advance the routine to the start of the next
step in the routine (testing the next zoning output) and
the Auto Test routine will resume its test procedure
6. When the Auto Test routine is completed, the Diagnostic
LED returns to a constant ON status (no blinking).
7. Replace the DIP switch cover on the Zoning Module
8. Repeat Steps 1-7 for every other AQ155 / AQ157 Zon-
ing Module connected to the AQ250
SEQUENCE OF OPERATION—AQ155 / AQ157 ZONING MODULES
1. When the Auto Test button is pressed, Zone 1 of the
Zoning Module is energized and the "Diagnostic" LED
on the AQ155 / AQ157 begins to blink quickly. Zone 1
remains energized for 15 seconds, then shuts off
2. Following that, each of the remaining zones is ener-
gized, sequentially—starting with Zone 2—for 15 sec-
onds, and then shuts off.
3. After Zone 4 has been de-energized, the AQ155 /
AQ157 exits the Auto Test routine and the "Diagnostic"
LED on the Module returns to steady illumination (no
blinking)
If no errors were detected in the Control Module or Zoning
Module Auto Test routines, the AQ250 is now ready for
operation. If errors were detected, refer to the Troubleshooting
section in the Appendix of these Instructions.
Check Out
1. Turn down the DHW AQUASTAT, if present, to avoid
interfering with space heating control operation.
2. Turn up the set point of one of the AQ1000 zone ther-
mostats.
2.1 The zone valve or pump associated with that zone
will turn on.
2.2 The Boiler, and T-T relay outputs will energize.
13 69-1982