Sonic Alert DCP301 user manual Controller is in the Ready mode Press

Chapter 9. TROUBLESHOOTING

■The program is not advanced by pressing PROG + DISP in the basic display state

Cause		Remedy
The controller is in the READY mode.	Press	RUN/HOLD to set the controller to the RUN mode. (The
	controller can be reset in case of external switch input
	or communications even in the READY mode.)
The controller is in the END mode.	Press	PROG + RUN/HOLD to set the controller to the READY
	mode, and press RUN/HOLD again to set the controller to the
	RUN mode.
The controller is in the constant-value opera-	Set constant-value operation data M .O D E setting to 0.
tion mode.
Key lock is enabled.	Set variable parameter L O C setting to 0 to 2.

■The controller does not change to FAST mode by pressing FUNC + in the basic display state

Cause	Remedy
The controller is in the READY mode.	Press RUN/HOLD to set the controller to the RUN mode. (The
	controller can be reset in case of external switch input
	or communications even in the READY mode.)
The controller is in the END mode.	Press PROG + RUN/HOLD to set the controller to the READY
	mode, and press RUN/HOLD again to set the controller to the
	RUN mode.
The controller is in the constant-value opera-	Set constant-value operation data M .O D E setting to 0.
tion mode.
Key lock is enabled.	Set variable parameter L O C setting to 0 to 2.

■The controller does not change to MANUAL mode by pressing A/M in the basic display state

Cause	Remedy
ON-OFF control is being carried out by 0D	Set PID set P setting in use to other than 0.0 and switch
and 6D outputs.	to PID control from ON-OFF control.
3-position-proportional control is selected by	Set setup data C 4 5 setting to 0 and switch to PID
3D output.	control from 3-position-proportional control.
Key lock is enabled.	Set variable parameter L O C setting to 0 to 2.

■The controller does not change to AUTO mode by pressing A/M in the basic dis- play state

Cause	Remedy
Key lock is enabled.	Set variable parameter L O C setting to 0 to 2.

■Auto-tuning (AT) is not started by pressing AT in the basic display state

Cause		Remedy
The controller is in the READY mode.	Press	RUN/HOLD to set the controller to the RUN mode.
The controller is in the MANUAL mode.	Press	A/M to set the controller to the AUTO mode.
Input 1 over-range	Correctly wire input 1 to correct input state.
Controller set not to execute AT.	Set variable parameter A T setting to other than 0.
The controller is set to programmer functions	Set setup data C 1 8 setting to 0.
by 5G output.
This is a heat/cool model.	AT cannot be executed by 3D and 5K outputs.
Key lock is enabled.	Set variable parameter L O C setting to 0 to 2.

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