©2018 Micro-Air Corp
6/6/2018
Rev 1.08
EasyStart Troubleshooting:
See the Micro-Air guide “EasyStart Advanced Troubleshooting Guide” available on our website for assistance in
troubleshooting EasyStart installations.
Fuses:
Protection fuses are installed in the start circuit to prevent damage due to miswiring or start capacitor failure. If this
fuse fails in normal operation, there is most likely a problem with the start capacitor which should be replaced along
with the fuse.
364 (3 ton)
1.
Revision H and earlier boards: These boards incorporate a non-replaceable fuse in the start
circuit. These units must be returned to Micro-Air for repair.
2.
Revision I and above boards: These boards incorporate a replaceable 15A 250V rated, slow
blow, 5mm x 20mm glass fuse.
368 (6 ton)
1.
Revision E and earlier boards: These boards incorporate a non-replaceable fuse in the start
circuit. These units must be returned to Micro-Air for repair.
2.
Revision F and above boards: These boards incorporate a replaceable 30A 250VAC rated
3AB, 3AG, ¼” x 1 ¼” (6.35mm x 31.75mm) slow blow ceramic fuse.
FAQs:
What is re-learning?
The re-learning process simply clears the EasyStart memory and returns it to as shipped condition.
EasyStart should be re-learned whenever a compressor is changed or if pressures were not allowed to equalize
during the learning process.
To re-learn EasyStart, remove power and open the EasyStart box. Locate the 6 pin header shown in the
jumper usage section of this manual and place the shorting jumper over pins 4 and 6 as shown. Start a cycle with
your thermostat with the compressor powered from AC mains and allow EasyStart to start the compressor. Remove
power once the compressor starts and replace the jumper to the stored position over pins 3 and 4. Replace the cover
on EasyStart and complete at least 4 additional starts. Be sure to allow time for pressures to equalize between starts,
usually 3 to 5 minutes.
Be sure to remove the jumper from pins 4 and 6 and replace it to pins 3 and 4 immediately after the
FIRST start and after power is removed.
I connected everything and it just won’t start. What do I do now?
Micro-Air has an entire guide to help troubleshoot problems from new installations to systems that were
working and develop a problem at www.microair.net. If there are any questions about wiring your unit, you can send
a wiring diagram for your compressor to
along with your question.
