Carrier 38TDB Guía para resolver problemas descargar pdf (Pagina 9)

Software Revs 3,5,6,8,10, 12 Infinity /Evolution Troubleshooting (Rev. 2)

10-12-2006

9

User Interface Generated Fault Descriptions cntd.

Fault

Description

User Interface Display Action

Original

Models

-A models

Outdoor unit

communication fault

ODU COMM

FAULT in fault

history

SYSTEM

MALFUNCTION

on main screen

OUTDOOR UNIT

COMMUNICATION FAULT

fault history

SYSTEM MALFUNCTION

on main screen

User interface has lost communication

with outdoor unit. Check wiring between

user interface and outdoor unit. Check

bus voltages on user interface and

outdoor unit. Also check for low voltage

short in outdoor unit control wiring.

Zone board 1

communication fault

ZONE 1-4 COMM FAULT in fault history

SYSTEM MALFUNCTION on main screen

User interface cannot communicate with

damper control module. Check bus

voltages and wiring.

Zone board 2

communication fault

ZONE 5-8 COMM FAULT in fault history

SYSTEM MALFUNCTION on main screen

User interface cannot communicate with

damper control module. Check bus

voltages and wiring.

NIM communication

fault

NIM COMM FAULT in fault history

SYSTEM MALFUNCTION on main screen

User interface cannot communicate with

NIM. Check bus voltages and wiring.

Defrost error DEFROST LOCKED in fault history

SYSTEM MALFUNCTION on main screen

The outdoor unit has been in defrost for

15 minutes.

Stage down due to

noise control

AIRFLOW

LIMITED. STAGE

DOWN

OCCURRED in

fault history

No display on

main screen

AIRFLOW LIMITED.

SHUTDOWN OCCURRED

In fault history

No display on main screen

A zone has reached its airflow limit setting

and the system has compensated by

staging down or shutting down. The

system is designed to do this to control air

noise, and this does not necessarily

reflect a problem with the system. See

detailed description in Zoning

Troubleshooting section.

Zone Board Fuse

blown

24 - ZONE BOARD FUSE in fault history

SYSTEM MALFUNCTION on main screen

Change fuse

Zone X Sensor 55 - ZONE SENSOR in fault history

NO SENSOR DATA on main screen for that

zone

Check zone sensor

LAT/HPT Sensor LAT/HPT SENSOR in fault history

No display on main screen.

Check sensor. These sensors are

optional and are for display purposes

only. The system does not react to LAT or

HPT temperature inputs.

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