tekmar 423 Universal Reset Module - Manual (Page 16)

© 2007 D 423 - 08/07 16 of 36
Testing the Control
Test Press and Hold
for 1 second
The control has a built-in test routine that tests the main
control functions. The control continually monitors the
sensors and displays an error message whenever a fault
is found. The individual outputs and relays are tested using
a test sequence.
Test Sequence
Each step in the test sequence lasts 10 seconds.
•
• Start the test sequence by pressing the Test button.
•
• Pause the test sequence by pressing the Test button
again. To advance to the next step, press the Test
button again.
• • If the test sequence is paused for more than five minutes,
the control exits the entire test routine.
• • To advance to a particular step, repeatedly press and
release the Test button to display the appropriate
device.
HAZARD
Access to the Test button requires the removal of the
front cover and exposes hazardous voltage while the
control is powered. Only trained, qualified and competent
personnel should operate the Test button.
IF Bus 1 is set to M1 (Mix 1):
Step 1 The Mix 1 device ramps up to 100% over
10 seconds or according to the motor speed
setting.
Step 2 The Mix 1 device ramps down to 0% over
10 seconds or according to the motor speed
setting.
Step 3 The Mixing 1 pump turns on for 10 seconds
then shuts off.
IF Bus 2 is set to M2 (Mix 2):
Step 4 The Mix 2 device ramps up to 100% over
10 seconds or according to the motor speed
setting.
Step 5 The Mix 2 device ramps down to 0% over
10 seconds or according to the motor speed
setting.
Step 6 The Mixing 2 pump on the Mixing Module
turns on for 10 seconds then shuts off.
IF Bus 3 is set to M3 (Mix 3):
Step 7 The Mix 3 device ramps up to 100% over
10 seconds or according to the motor speed
setting.
Step 8 The Mix 3 device ramps down to 0% over
10 seconds or according to the motor speed
setting.
Step 9 The Mixing 3 pump on the Mixing Module
turns on for 10 seconds then shuts off.
Step 10 The primary pump turns on and remains on for
the rest of the test sequence.
IF Boil 1 is set to Au (Auto):
Step 11 The Stage 1 contact is closed to fire an on-off
boiler for 10 seconds or enable a modulating
boiler.
IF the On-Off / Modulating DIP switch is set to
Modulating or the tekmar Stager / Off DIP switch is
set to tekmar Stager:
Step 12 The Mod 1 output ramps up to 100%.
Step 13 The Mod 1 output ramps down to 0%.
The Stage 1 contact is opened and the boiler
is shut off.
IF Boil 2 is set to Au (Auto):
Step 14 The Stage 2 contact is closed to fire an on-off
boiler for 10 seconds or enable a modulating
boiler.
IF the On-Off / Modulating DIP switch is set to
Modulating:
Step 15 The Mod 2 output ramps up to 100%.
Step 16 The Mod 2 output ramps down to 0%.
The Stage 2 contact is opened and the boiler
is shut off.
Step 17 If DHW MODE is set to 1 or 2, the primary
pump is shut off and the DHW Pump contact
is closed.
If DHW MODE is set to 3 or 4, the primary
pump stays on and the DHW Pump contact is
closed.
The control exits the test sequence.
If a device fails to operate during the test sequence, refer
to the W 423 Wiring Brochure to check the operation
of the control. If the control works properly, refer to any
troubleshooting information supplied by the equipment
manufacturer.