Sierra Monitor Corporation HRG010-W Troubleshooting, See 5.3 Alarm Reset for error recovery

HRX-OM-J049-A

Chapter 5 Error Message and Troubleshooting

5.2 Troubleshooting

See “5.3 Alarm Reset” for error recovery.

Table 5-2 Troubleshooting

Error	Cause		Remedies		Alarm reset
					Detector	HRG
			．．．．．．．．．．．．．．．．．．．．．．．．
	No power is supplied.		With the switch．．．．in its ON position, supply the
			main power. Only qualified personnel are
			allowed for power wiring.		-
			Supply 3-phase power (R- and
Power error	Open phase		．．．．			-
			S-phases).Only qualified personnel are
			allowed for power wiring.
	Overcurrent		Request for service. Turn ON the breaker.		Manual reset
	Ground fault	Request for service. Turn ON the breaker.			*1)
			．．．．
Start-up	Low voltage		Supply a rated voltage. Only qualified	-		-
failure			personnel are allowed for power wiring.
Reverse of	Incorrect phase		Rewire the power cable for two of three
pump and	sequence of power		．．．
			phases (phase sequence). Only qualified			Manual reset
compressor	wiring		personnel are allowed for power wiring.		Auto reset
						(yellow
	Inadequate quantity of
Tank fluid				*2)		button)
	the fulid in the tank, or
			Replenish the circulating fluid (fresh water).			*3)
level drop	drop in the tanked fluid
	level
Suspension of Supplied facility water			Press the reset button of the high pressure		Manual reset	Manual reset
facility water	falls short of its specified		cutoff switch.		(red button)	(yellow
						button)
supply	volume.		Supply facility water standing at 5 to 32°C.	*1)
						*3)
	Abnormal rise in fluid		Press the reset button of the pump			Manual reset
Pump			electromagnetic switch (MS1). Adopt a pipe		Manual reset
	supply pressure		size suitable for circulating fluid flow, or,		(blue button)	(yellow
overload			adjust the opening of the manual relief valve.			button)
					*1)
						*3)
	Failure in the pump		Request for service.
	motor
	Abnormal rise in ambient		Improve ambient conditions to provide
	temperature		ventilation and exhaust heat. Keep the unit
			out of direct sunlight and radiant heat.
	Excessive calorific value		Reduce a calorific value output from your unit.
	of the chiller					Manual reset
High temp. of	Refrigerant leak	Request for service.			Auto reset
						(yellow
	Compressor error
supplied fluid			Request for service.		*2)	button)
	Failure in the
			Request for service.			*3)
	electromagnetic switch
	Other errors in the		Request for service
	refrigerating circuit
	Failure in the temp.		Request for service.
	controller
	Excessive calorific value		Press the [RESET] button of the compressor		Manual reset	Manual reset
Compressor			electromagnetic switch (MS2). Reduce a
	of the chiller		calorific value output from your system.		(blue button)	(yellow
overload						button)
	Failure in the			*1)
			Request for service.			*3)
	compressor motor

*1) The recovery from an error capable of manual alarm reset takes place with the use of the switch and reset button after the cause (such as fluid level drop or abnormal temperature) is eliminated.

*2) The recovery from an error capable of automatic alarm reset takes place when the cause (such as fluid level drop or abnormal temperature) is eliminated after waiting period.

*3) With the tripped detector located, be sure to press the [RESET] button (yellow button) of the system electrical unit after the elimination of the error cause. The alarm lamp goes out that enables the unit to resume.

5.2 Troubleshooting	HRG010-W HRG015-W
5-2	1st edition : Aug. 2006
	Rev. A: May. 2007