Digi-Motor
®
Installation Guide
10
®
www.marsdelivers-contractors.com
Troubleshooting
Operating The System In Constant Fan Mode – X-13
Applications
The speed taps in X-13 mode are rated for 24VAC and are driven by thermostat outputs. DO NOT CONNECT ANY
SPEED TAPS TO LINE VOLTAGE. Azure
®
will run anytime the main power and at least 1 speed tap are energized. If
more than 1 speed tap is energized, Azure
®
will run at the higher speed. Depending on the system, continuous fan
operation can be achieved in a variety of ways:
• Connect the orange speed tap 1 to G on the thermostat.
Or
• Connect the orange speed tap 1 to any fixed 24VAC source. Azure
®
will provide 625 RPM constant fan
operation as long as the system has power. Any calls for heat/cool will override the low speed constant fan
operation.
Symptom
Resolution
Motor does not run
Check for line voltage power across motor leads.
Make certain motor is configured for the correct application voltage using the
voltage jumpers.
Check electrical continuity through the surge suppressor by removing it from the
wire harness and testing Line and Neutral leads. Replace if bad, or remove and
reconnect the harness.
Make certain motor is connected to a blower wheel load.
Make certain motor is correctly configured (PSC or X-13) for the application.
If in X-13 mode, make certain motor has power and a 24V signal on the
speed tap.
Motor speed taps do not
provide correct airflow
Make certain the correct Azure
®
motor size is being applied. (10860 1/5 - 1/2 HP,
10861 1/2 - 1 HP)
Make certain all supply registers and return grills are open and unobstructed.
Make certain the air filter is clean.
Make certain all zones are open.
Re-perform the auto size function as described in the CONNECTING & AUTO
SIZING section.
Use the optional hand held programmer (MARS No. 08502) to adjust speeds.
Motor does not stop during
auto sizing
Load may be to great for the motor; try setting speeds with hand held programmer
or try 1 HP Azure
®
(10861).
