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TROUBLESHOOTING
Evolution Zone Control™ does not power up.
1. Recheck wiring to ABCD on all devices.
2. Make sure all colors match for every terminal.
3. Make sure power is applied to the indoor unit, and the
amber LED is lit on indoor control circuit board.
4. Check for 24VAC between the C and D terminals at
Evolution Zone Control™ terminal connector and Damper
Control Module.
5. Check fuse on indoor unit’s circuit board.
Display says ″Indoor Unit Not Found″
1. Recheck wiring to ABCD on all devices.
2. Make sure all colors match for every terminal.
3. Press left-side button to try again.
4. If display still reads ″Indoor Unit Not Found″, disconnect
all devices from ABCD and connect User Interface directly
to indoor unit.
Display says ″Outdoor Unit Not Found″, and I have a two-
speed communicating outdoor unit:
1. Recheck wiring to ABCD connector on outdoor unit.
2. Make sure all colors match for every terminal.
3. Check for 24VAC between the C and D terminal connector
of outdoor unit.
I made a mistake on the start-up screens, and hit the right-side
button to get to the run mode. How do I get back to start-up?
1. Press the ADVANCED button for at least 10 seconds.
2. Install/Service menu will appear.
3. Scroll down to the INSTALL selection.
4. Press the right-side button; the screen will prompt you to
press the right side again to re-install the system.
Control does not see zones 5 through 8.
1. Make sure zone module5-8hastheDIPswitches set to the
right.
2. Recheck wiring to the ABCD connectors.
Control says I have zones5-8butnot1-4.
1. Make sure zone module1-4hastheDIPswitches set to the
left.
2. Recheck wiring to the ABCD connectors.
Some zones in my zoned system do not provide enough
comfort. (A noticeable difference exists between the actual
room temperature and operating set point, yet the equipment
does not turn on).
1. The zone airflow limit may be set too low. Perform the
Zone Airflow Limit Checkout procedure, raise airflow limit
setting, if possible.
Some zones provide too much airflow and are noisy.
1. The zone airflow limit may be set too high. Perform the
Zone Airflow Limit Checkout procedure, lower airflow
limit setting if possible.
CRITICAL MALFUNCTION SCREEN
The following errors will cause a Critical Malfunction screen to
pop up. Heat and Cool LEDs will alternately flash at a 1 second
rate. This appears when system cannot deliver any conditioning at
all.
FAN COIL
Code 16 = Communication Fault
Code 44 - Blower Communication Fault
Code 41 - Blower Motor Fault
FURNACE
Code 15 - Blower Motor Lockout
Code 22 - Abnormal Flame Proving Signal (not dual fuel)
Code 41 - Blower Motor Fault
USER INTERFACE
No communication with indoor unit
SYSTEM MALFUNCTION SCREEN
This screen appears when system cannot completely deliver
conditioning. The following errors will cause a System Malfunc-
tion Screen to pop up:
FAN COIL
Code 37 - Heater output sensed ON when not energized
FURNACE
Code 13 - Limit Circuit Lockout
Code 14 - Ignition Lockout
Code 21 - Gas Heating Lockout
Code 22 - Abnormal Flame Proving Signal (dual fuel only)
Code 23 - Pressure Switch Did Not Open
Code 24 - Secondary Voltage Fuse Open
Code 33 - Limit Circuit Fault AND High Heat Only is active
Code 45 - Control Circuitry Lockout
NOTE: For all the above furnace error codes, the system will use
heat pump heating exclusively if available. When the error code is
cleared or disappears, furnace heating will resume.
TWO-SPEED OUTDOOR UNIT
Code 85 - VC voltage at standby
Code 86 - High capacity compressor lockout
USER INTERFACE
Temp Sensor Failed, ″NO SENSOR DATA″ shown in place of
actual temp.
Outdoor Unit communication fault.
Network Interface Module (NIM) communication fault
Defrost Error (defrost signal on for more than 15 minutes)
The user can press the right side button to dismiss the notice. The
regular run mode screen will then appear except ″SYSTEM
MALFUNCTION″ will appear in place of the day/time. If the error
has not disappeared within 24 hours, the above display will return.
If the error code disappears, ″SYSTEM MALFUNCTION″ will
disappear and the day/time will reappear.
71
˚
FAN: AUTO
CALL TECHNICIAN
OUTSIDE: 94
o
ALERT !
C
RITICAL MALFUNCTION
HVAC SERVICE
1 800 555-1212
Fig. 26 — Critical Malfunction Screen
A04027
FAN: AUTO
CALL TECHNICIAN
OUTSIDE: 94
o
SYSTEM MALFUNCTION
HVAC SERVICE
1 800 555-1212
DISMISS
NOTICE >
71
˚
Fig. 27 — System Malfunction Screen
A04028
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