Trane ZN510 Controller Diagnostics, ZN510 controller diagnostics, Diagnostic Fan Other Outputs

Diagnostics

Table 17: ZN510 controller diagnostics

Diagnostic	Fan	Other Outputs
Condensate overflow	Off	Compressors: Off
		Damper: Closed
		Compressor 1: Off
Low temp detect - Crt 1	Enabled	Compressor 2: See note below.
		Damper: See note below.
		Compressor 1: See note below.
Low temp detect - Crt 1	Enabled	Compressor 2: Off
		Damper: See note below.
		Compressor 1: Off
Low temp detect - Crt 1 and 2	Off	Compressor 2: Off
		Damper: Closed
		Compressor 1: Off
High/low press cutout - Crt 1	Enabled	Compressor 2: See note below.
		Damper: See note below.
		Compressor 1: See note below.
High/low press cutout - Crt 2	Enabled	Compressor 2: Off
		Damper: See note below.
		Compressor 1: Off
High/low press cutout - Crt 1 and 2	Off	Compressor 2: Off
		Damper: Closed
Space temperature failure*	Off	Compressor(s): Off
		Damper: Closed
		Compressor 1: Off
Leaving water temp failure	Enabled	Compressor 2: See note below.
		Damper: See note below.
Discharge air temp failure*	Enabled	Compressor(s): No action
		Damper: No Action
Maintenance required	Enabled	Compressor(s): No action
(example: Filter Status)		Damper: No Action
Local setpoint failure*	Enabled	Compressor(s): Enabled
		Damper: Enabled
Local fan mode failure*	Enabled	Compressor(s): Enabled
		Damper: Enabled
Invalid unit configuration	Disabled	Compressor(s): Disabled
		Damper: Disabled

High/low pressure cutout and low temperature detection diagnostics for heat pump configurations isolate each circuit and independently disable compressor operation. For single compressor units, these diagnostics cause the compressor to shut down, the unit fan to be controlled off, and the outdoor air damper to be closed (when present).

When BOP 6 is configured as a generic binary output, BOP 6’s state is unaffected by all unit diagnostics.

* Note: Non-latching diagnostics automatically reset when the input is present and valid.

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