York Air Conditioner: CZF / CZH
Re: FAULT CODE DISPLAY
The control will display any fault code that is currently active using the LED's. The control will display the fault code, pause two seconds, and display the fault again. The control will continue the fault code display until the condition that caused the fault code no longer exists.
► If multiple fault codes are present at the same time, the control will display only the most recent fault.
Operational Fault Codes
Description | LED1 (Red) | LED2 (Green) |
Control Failure | On | Off |
Hi-Pressure (not in lockout) | 1 | Off |
Hi-Pressure Lockout | 2 | Off |
Low Pressure Lockout | 4 | Off |
Low Voltage (<19.2VAC) | 5 | Off |
Low Voltage (<16VAC) | 6 | Off |
Hi-Pressure (Y1 & Y2 off) | 9 | On |
Sensor or Switch Fault
Description | LED1 (Red) | LED2 (Green) |
Outdoor Sensor Shorted | On | 1 |
Outdoor Sensor Open | On | 2 |
Wiring-Related Faults
Description | LED1 (Red) | LED2 (Green) |
Contactor Miswired | 1 | On |
Y2 without Y1 | 2 | On |
LOCKOUT MODES
Soft Lockout - The control will cause a soft lockout during the following conditions:
During the soft lockout mode, the control will do the following:
The control will Reset when any of the following occur following removal of the fault condition:
Hard Lockout - If four soft lockouts occur within a 12 hour period, the control will enter a hard lockout condition.
The control will Reset by one of the two following conditions: