Service training – Carrier 58MSA User Manual

Page 16

Blower access panel door switch opens 115-v power to
control center. No component operation can occur. Caution
must be taken when manually closing this switch for service
purposes. Failure to follow this warning could result in
electrical shock, personal injury, or death.

4. BRIEFLY short (jumper) TEST, 1/4-in. quick-connect termi-

nal on control center (adjacent to the LED diagnostic light)
and the C

terminal on thermostat connection block. (See

Fig. 12.)

NOTE:

If TEST to C

terminals are jumpered longer than 2 sec,

LED will flash rapidly, and retrieval request will be ignored.

5. When above items have been completed, the component test

sequence will occur as described in the Component Test
Sequence section above.

NOTE:

Be sure to record the status code which is flashed 4 times

at start of component test for further troubleshooting.

6. After component test is completed and furnace is operating

properly, release blower access panel door switch, replace
blower access panel, and replace main furnace door.

A94328

SERVICE TRAINING

Packaged Service Training programs are an excellent way to increase your
knowledge of the equipment discussed in this manual, including:

• Unit Familiarization

• Maintenance

• Installation Overview

• Operating Sequence

A large selection of product, theory, and skills programs is available, using popular
video-based formats and materials. All include video and/or slides, plus companion
book.

Classroom Service Training plus "hands-on" the products in our labs can mean
increased confidence that really pays dividends in faster troubleshooting, fewer
callbacks. Course descriptions and schedules are in our catalog.

CALL FOR FREE CATALOG 1-800-962-9212

[ ] Packaged Service Training

[ ] Classroom Service Training

58MSA4SM

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 1

Tab

6a 8a

PC 101

Catalog No. 535-80007

Printed in U.S.A.

Form 58MSA-4SM

Pg 16

10-00

Replaces: 58MSA-3SM