Carrier 38TDB- Troubleshooting Guide

Carrier 38TDB

Carrier 38TDB– Troubleshooting Guide, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 3 – User Interface generated Critical Malfunctions:; No communication with indoor unit; Fan Coil generated System Malfunction events:; message, modifications to fan/staging operation will not occur); Furnace generated System Malfunction events:
  • Page 5 – Troubleshooting; Component not found at initial installation:; Mis-wiring in outdoor unit will cause loss of communication
  • Page 7 – Turn the filter reminder to off in the homeowner’s Advance Setup; Situation: ERV/ HRV Not Recognized By System
  • Page 8 – User Interface Generated Fault Descriptions; User Interface Display; Check wiring and ohm out sensor.
  • Page 9 – User Interface Generated Fault Descriptions cntd.; Defrost error
  • Page 10 – Fault Description; SAM radio test failed
  • Page 11 – Outdoor Unit Generated Fault Descriptions; Fault Description User Interface Display
  • Page 12 – Outdoor Unit Generated Fault Descriptions Cntd.
  • Page 14 – Description; Action
  • Page 15 – The RPM displayed in the Service screen is actual RPM.
  • Page 16 – can be installed to; FIX; a ductwork related problem.
  • Page 17 – Airflow limits and equipment protection
  • Page 18 – Evaluate structure for zoning suitability; The steps below occur when Blower Cutback has been initiated:; Reduce CFM request down to minimum CFM described above; Options if EXCESS STATIC PRESSURE is active in Last 10 Events:; Evaluate duct design and make improvements where necessary; Zoning
  • Page 20 – Cycling power does not tell the system a new component
  • Page 21 – Troubleshooting Communication Bus; CAN NOT FIND INDOOR UNIT
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Software Revs 3,5,6,8, 10, 12 Infinity /Evolution Troubleshooting (Rev. 2)
10/12/2006

Infinity/ Evolution Troubleshooting Guide

User Interface Software Ver. -03, -05, -06, -08, -10 and -12

Table of Contents


User Interface Software Identification…………………………..2

Critical Malfunction Description……………………………….....2

System Malfunction Description……………………………….…3-4

Troubleshooting

Equipment Status, Checkout, Service Menus………………...5

Communication and Installation Problems…………………….5

Intermittent Loss of Communication……………………………6

Non-Zone Under-Conditioning or Over-Conditioning….…..…6

Clean or Replace Filter Pop Up Message………………..……7

ERV/ HRV not Recognized by System…………………………7

User Interface Generated Fault Code Descriptions………..…8-10

Outdoor Unit Generated Fault Code Descriptions……....……11-12

Fan Coil Generated Fault Code Descriptions….……………...13

Furnace Generated Fault Code Descriptions…………….…...13-14

Airflow, Static Pressure and RPM readings…………...…….…9

Zoning troubleshooting………………………..……………....…16-19

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Damper Troubleshooting and Replacement…………………...19

Before condemning User Interface or Circuit Board……...…..20

Troubleshooting Communication Bus…………………...……..21

Communication Bus Voltage Check………………….…..…….22

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Summary

Page 3 - User Interface generated Critical Malfunctions:; No communication with indoor unit; Fan Coil generated System Malfunction events:; message, modifications to fan/staging operation will not occur); Furnace generated System Malfunction events:

Software Revs 3,5,6,8,10, 12 Infinity /Evolution Troubleshooting (Rev. 2) 10-12-2006 3 User Interface generated Critical Malfunctions: No communication with indoor unit System Malfunction Certain system events can result in the pop-up message “SYSTEM MALFUNCTION CALL TECHNICIAN”. A system malfunctio...

Page 5 - Troubleshooting; Component not found at initial installation:; Mis-wiring in outdoor unit will cause loss of communication

Software Revs 3,5,6,8,10, 12 Infinity /Evolution Troubleshooting (Rev. 2) 10-12-2006 5 Troubleshooting The Infinity and Evolution Systems are designed to record and store system faults and events that may be used to help lead a servicer to the root cause of a real or perceived system problem. It sho...

Page 7 - Turn the filter reminder to off in the homeowner’s Advance Setup; Situation: ERV/ HRV Not Recognized By System

Software Revs 3,5,6,8,10, 12 Infinity /Evolution Troubleshooting (Rev. 2) 10-12-2006 7 Situation: Clean or Replace Filter is displayed after a short period of time These systems have a feature called TrueSense filter detection. This feature reads the change in static pressure caused by the filter ac...

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