Maintenance Troubleshooting Guide - Price FCHC Manual

HORIZONTAL LOW-PROFILE FAN COILS
MAINTENANCE
Troubleshooting Guide
1. Confirm fan coil size and rating with blueprint and schedule (check Control Assembly label on terminal unit).
2. Visually check electrical connections with the Control Wiring diagram(s) located inside the electrical enclosure or in the applicable
General
controls brochure.
3. Verify that the supply voltage is the same as specified on the control diagram(s) or Voltage Information label.
1. Foreign material in fan.
2. Fan or duct size selection too small for application causing high air velocity.
Noise
3. Vibrating duct work.
4. Unbalanced fan wheel causing it to hit the housing.
1. Check the unit wiring against the provided Control and Wiring diagrams. See inside cover of the electrical enclosure for diagrams.
Fan Does Not 2. Verify that the disconnect switch or breaker is not opened.
Operate
3. Check for proper control signal from thermostat. See thermostat for full heating and monitor output.
4. Fan wheel may be touching the housing.
1. Check filter for excessive dust build-up.
2. Check fan for particle blockage.
3. Check coils for particle blockage.
Air Volume not
4. Measure downstream static pressure; compare to fan curve.
as Specified
5. Verify that the supply voltage is the same as specified on the wiring diagram. See wiring diagram pasted on the inside of the
electrical enclosure or in the applicable controls brochure.
6. Insulating duct liner loose.
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