Hoshizaki HR24A service manual b Service Menu Chart

b) Service Menu Chart

Setpoint

Service Menu	Min.	Max.	Unit	Factory Setting	Description
SP	See r1	See r2	°C/°F	39°F	Cabinet setpoint.
					(compressor off temperature).
					(see r0 for compressor on temperature).

Thermistor Input (Do Not Adjust)

Service Menu	Min.	Max.	Unit	Factory Setting	Description
CA1	-25	25	°C/°F	0	Cabinet thermistor temperature offset.
CA2	-25	25	°C/°F	0	Evaporator thermistor temperature
					offset.
P1	0	1	---	0	Decimal point for °C display: 0=no,
					1=yes.
P2	0	1	---	1	Temperature display scale: 0=°C, 1=°F
P3	0	2	---	0	Evaporator thermistor:
					0=not connected
					1=defrost/evaporator fan
					2=defrost
P8	0	250	ds	5	Temperature display delay.

Operation (Do Not Adjust)

Service Menu	Min.	Max.	Unit	Factory Setting	Description
r0	0	15	°C/°F	4°F	Temperature differential above
					setpoint for the compressor to
					turn on.
r1	-99	r2	°C/°F	34°F	Minimum cabinet setpoint.
r2	r1	99	°C/°F	52°F	Maximum cabinet setpoint.
r3	0	1	---	0	Locked setpoint. 0=no, 1=yes
r4	0	99	°C/°F	0	Energy saving and overcooling
					Do not adjust.
r5	0	99	°C/°F	0
r6	0	240	min.	30

Compressor Protection (Do Not Adjust)

Service Menu	Min.	Max.	Unit	Factory Setting	Description
C0	0	240	min.	2	Compressor delay at startup
					and after power interruption.
C1	0	240	min.	5	Minimum time between
					compressor starts.
C2	0	240	min.	3	Minimum compressor off time.
C3	0	240	sec.	180	Minimum compressor run time.
C4	0	240	min.	10	Compressor off time with
					defective cabinet thermistor.
C5	0	240	min.	10	Compressor on time with
					defective cabinet thermistor.

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