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 should be
understood that not all recorded events necessarily represent system problems. These should be used
as a clue to guide the servicer to the appropriate part of the system.
Equipment Status
To check equipment status, push and hold the right side button for 3 seconds. This will show what the
User Interface is telling the system to do. Compare this information to what is actually happening. This
can help lead you to a component problem.
Checkout
This system gives you the ability to exercise all the system components and accessories to verify proper
operation. Access this by pressing the Advanced button for 10 seconds.Select CHECKOUT, then select
the component you wish to exercise and follow screen prompts.
NOTE: Airflow during in Checkout mode is defaulted to Efficiency regardless of AC Airflow
setting
Service Menus
The Service Menus provide system information to aid in troubleshooting. To access, press and hold the
Advanced button for 10 seconds and select “Service”. This will allow you to check status of individual
system components, view the Last 10 System Faults, the Run/Fault History and more.
Checking system status should be one of the first steps in troubleshooting these systems.
Troubleshooting Communication and Installation Problems
This system uses digital communication on a communication bus (A and B wires) to send commands to
operate equipment and send error messages to the User Interface to display. At initial installation, the
system first finds all “communicating” equipment on the bus, and self configures to the appropriate
equipment attached. If a piece of equipment is non- communicating such as an older outdoor unit or
accessory, the size or type will need to be input by the installer during the learning process.
Each communicating device contains a green communication light to verify if communication has been
established. This is a clue to where a potential problem lies.
Component not found at initial installation: first attempt to reinstall by entering the service screens
and selecting INSTALL. Try this several times before proceeding with troubleshooting
A communication error exists, or equipment cannot be found by the User Interface: This may be
due to a wiring problem with any of the components or accessories of the system. For example, a short
in the wiring to the outdoor unit or accessory, may block communication with the indoor unit. In the
majority of instances, using the step by step method described on page 21 will isolate the problem to the
appropriate piece of equipment. If during Start up: CANNOT COMMUNICATE WITH EQUIPMENT is
displayed on a furnace installation, make sure all dipswitches on SW-4 are turned off.
If a problem is isolated to the outdoor unit (comm error only occurs when outdoor unit is connected to the
bus), the problem may be in the thermostat wire, or the outdoor unit wiring. If thermostat wire checks out
OK, check wiring inside the unit control box. Make sure all wires are tightly attached, and run to the
appropriate terminal.
Mis-wiring in outdoor unit will cause loss of communication
and operational problems in this system.
(14 pages)
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(49 pages)
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