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BCXC-SVX01B-EN 73
Diagnostics
Service LED section. Use Rover™ service tool to restore the unit to normal operation. Refer
to the Rover product literature for more information.
Manual Output Test
The purpose of the manual output test sequence is to verify output and end device operation. Use
the manual output test to:
• Verify output wiring and operation without using Rover™, service tool.
• Force the water valve to open and balance the hydronic system.
Note: The manual output test is not an automatic cycle. You must press the Test button to proceed
through each step.
The controller observes all diagnostics that occur during the test sequence. Although an automatic
diagnostic reset sequence exists as part of the controller’s normal operation, the automatic
diagnostic reset feature is not active during the test sequence.
If left in an individual test step, the controller remains in test mode for 60 minutes and then exits
to normal operation.
Many service calls are due to unit diagnostics. The test sequence resets unit diagnostics and
attempts to restore normal unit operation prior to testing the outputs. If the diagnostics remain after
a reset, the STATUS LED indicates the diagnostic condition is still present (two blinks).
Manual Output Test Procedure
Follow the procedure below to test the Tracer™ ZN010, ZN510, or ZN520 controller.
1. Press and hold the Test button for at least two seconds (not exceeding five seconds), and then
release, to start the test mode.
2. The test sequence will turn off all outputs and then attempt to clear all diagnostics.
3. Press the Test button several more times (no more than once per second) to advance through
the test sequence.
The outputs are not subject to minimum times during the test sequence. However, the test
sequence only permits one step per second which limits minimum output time.
The green LED is turned off when the Test button is pressed. To begin the manual output test mode,
press and hold the Test button (turning off the green LED) for at least two seconds. The green LED
will begin to blink, indicating the controller is in test mode.