System malfunction screen – Carrier Infinity SYSTXCCUID01- B User Manual

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SYSTEM MALFUNCTION SCREEN

OUTSIDE: 84_ | FAN: AUTO

71_

HVAC SERVICE

1---800---555---1212

SYSTEM MALFUNCTION

CALL TECHNICIAON

A07036

Fig. 34 -- System Malfunction Screen

Fan Coil

The code number represents flash code on circuit board of fan coil.
Certain faults will generate a system malfunction message on the

main screen. When this occurs, a technician should proceed to the

Last 10 System Events screen in the Service Menu to determine
which fault has caused the message.
A new feature in the --B model is that the Status screen (right side
button press for 3 seconds) will reveal the active fault to the

homeowner.
Below is a list of which faults will result in a System Malfunction
event:
Code 37 -- Heater output sensed On when not energized
Code 41 -- Blower Motor Fault (ventilator, humidifier,

dehumidifier, outdoor unit will be turned off)
Code 44 -- Motor Communication Fault (ventilator, humidifier,
dehumidifier, outdoor unit will be turned off)
Code 45 -- Control failure

Furnace

The code number represents flash code on circuit board of furnace.
Code 13 -- Limit Circuit Lockout
Code 14 -- Ignition Lockout
Code 15 -- Blower Motor Lockout (ventilator, humidifier,

dehumidifier, outdoor unit will be turned off)
Code 21 -- Gas Heating Lockout
Code 22 -- Abnormal Flame Proving Signal
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 41 -- Blower Motor Fault (cooling mode only) (ventilator,

humidifier, dehumidifier, outdoor unit will be turned off)
Code 45 -- Control Circuitry Lockout
NOTE: For codes 13, 14 and 21, the system will use heat pump
heating exclusively if available. When the error code is cleared or
disappears, furnace heating will resume if still requested.

Outdoor Unit

The code number represents flash code on circuit board of outdoor
unit.
Code 25 -- Invalid model plug
Code 45 -- Control Failure
Code 47 -- No 230V at unit
Code 73 -- Contactor shorted
Code 74 -- No high voltage at compressor
Code 76 -- Low stage didn’t start three times
Code 78 -- High stage didn’t start three times
Code 81 -- Thermal lockout in low stage -- 4 hrs.
Code 82 -- Thermal lockout in high stage -- 4 hrs.
Code 83 -- Low Pressure Lockout -- 4 hrs.
Code 84 -- High Pressure Lockout -- 4 hrs.
Code 85 -- Low contactor open
Code 86 -- Low contactor shorted
Code 87 -- High contactor open

User Interface

Temp sensor failed, loss of communication with smart sensor,
smart sensor fault. “NO SENSOR DATA” shown

Indoor unit communication fault

Outdoor unit communication fault

Packaged product communication fault

NIM communication fault

SAM communication fault

Possible Frozen Coil

High Room Temp Alert, when 100_F exists for at least 10
minutes, and removed when less than or equal to 98_F exists

Low Room Temp Alert, when 38_F exists for at least 10
minutes, and removed when greater than or equal to 40_F exists

High Humidity Alert, when 80% Rh exists for 30 minutes, and
removed when less than or equal to 78% Rh exists

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.

Printed in China

Edition Date: 03/08

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

Catalog No: UID01---4SI

Replaces: UID01--- 3SI

CCUI