Hoshizaki KMS-1401MLJ, Condensing Unit Models SRK-14J/3 LED Lights and Audible Alarm Safeties

2. LED Lights and Audible Alarm Safeties

At startup, a 5-second delay occurs while the control board conducts an internal timer check. A beep occurs when the control switch is moved to the "ICE" position. The red LED indicates proper control voltage and remains on unless a control voltage problem occurs. The green LEDs 1 through 4 energize and sequence from initial startup as listed in the table below. Note that the order of the LEDs from the outer edge of the control board is 1, 4, 3, 2. For details, see "II.B. Sequence of Operation."

Sequence Step		LED		Energized		Time LEDs are On
				Components	Min.	Max.	Avg.
1-Minute Fill Cycle	4			WV1			1 minute
Harvest Cycle	1, 4, 2			Comp, FMRs	2 minutes	20 minutes	3 to 5 minutes
				WV2, HGVs
Harvest Pump Timer	1, 3, 2			Comp, FMRs,	0 seconds	50 seconds	harvest pump
				PM, HGVs			timer setting
Freeze Cycle		1 (and 4 for first	Comp, FMRs,		5 minutes	freeze timer	30 to 35 minutes
		1 min.)		PM, LLVs		setting
				(WV1 for first 1
				min.)
Pump-Out Cycle	1, 3, 2			Comp, FMRs,	10 seconds	20 seconds
				PM, HGVs, DV

The built in safeties shut down the icemaker and have alarms as listed below.

No. of Beeps	Type of Alarm	Notes
(every 3 sec.)
1	High Evaporator Temp.	Check for harvest problem (stuck HGVs or relay), hot
	(temperature > 127°F (53°C))	water entering icemaker, stuck HM, or shorted thermistor.
2	Harvest Backup Timer	Check for open thermistor, HGVs not opening, TXVs or
	(harvest > 20 min. for two cycles	LLVs leaking by, low charge, or inefficient Comp.
	in a row)
3	Freeze Timer	Check for a F/S stuck closed (up), WV1 or WV2 leaking
	(freeze > specified setting for	by, HGVs leaking by, PM not pumping, TXVs not
	two cycles in a row)	feeding properly, LLVs not opening, low charge, HM not
	Timer is factory set using S4 dip	bypassing, or inefficient compressor.
	switch 9 & 10
To reset the above safeties, press the "ALARM RESET" button with the power supply on.
6	Low Voltage	Red LED will turn off if voltage protection operates.
	(92Vac±5% or less)	The control voltage safeties automatically reset when
7	High Voltage	voltage is corrected.
	(147Vac±5% or more)

Legend: Comp–compressor; DV–drain valve; FMRs–fan motors-remote; F/S–float switch; HGVs–hot gas valves; HM–headmaster (C.P.R.); LLVs–liquid line valves; PM–pump motor; TXVs–thermostatic expansion valves; WV1–fill/refill water valve; WV2–harvest water valve

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