Amtrol Troubleshooting Guide for DC2 Digital Pressure Switch: Error Codes & Common Issues

TROUBLESHOOTING

Problem			Cause			Solution
		No power			Check circuit breaker and wiring
Display will not					connection
illuminate		Improper wiring			Check polarity and wiring
		Improper voltage			Ensure voltage is 115V or 230V
		Differential attempted is below			Differential cannot be less than 10 psi
		10 psi or above 55 psi			or greater than 55 psi
HI or LO setting will		Minimum cut-in reached			LO cannot be set below 10 psi
not change		Maximum cutout reached			HI cannot be set above 80 psi
		HI setting greater than pump			Reduce HI setting to within pump
		rating			capability
Pump will not reach		Insufficient prime (above ground			Prime pump as directed by
cut-off (HI)		pumps)			manufacturer - use manual operation
					mode
		No water to pump			Check shutoff valves
		Pump or line blockage			Remove obstructions
		Fixture open or leak in plumbing			Determine cause of flow and remedy
		Pressure tank too small			Size tank per manufacturer’s literature
		Differential too narrow			Spread range via HI or LO setting
Pump rapid cycles		Waterlogged pressure tank			Replace tank
		Improper tank air charge			Charge as instructed by manufacturer
		Improper wiring			Check proper wiring to “line in”, L1 &
					L2
		No power			Check circuit breaker and wiring
					connections
		DC2 error encountered			See error chart below
Pump will not activate		Faulty pump			Contact pump manufacturer
		Improper wiring (DC2 or pump)			Check wiring per manufacturer’s
					instructions
Water flow stops		Tank precharge too high			Adjust precharge per manufacturer’s
before cut-in					instruction
Display reads		Mounting position may vary			Press 5 6 together for 3 seconds
upside-down					and screen will rotate 180 degrees
		MODEL DC2 ERROR CODES
Error
Code	Reason			Action		Solution
	Rapid cycle					See “Pump Rapid Cycle”
E1				Switch continues to		above
	Excessive amp draw			operate		Have pump checked for
						proper operation
E2	Low-suction shutoff			Shutoff. Auto restart after		(A) Determine cause of
	(running pressure) below 10 PSI			60 min.		low-suction
						(B) Check Wiring
						(C) Inspect pump
E3	Improper voltage			Shutoff after 2 min.*		Restore voltage to proper
						range

To reset switch at any time: Press 5  6 buttons simultaneously for 5 seconds.

*Unit will monitor voltage until voltage condition returns to normal. Pump will restart automatically.

UNIT CONTAINS NO SERVICEABLE PARTS. REMOVAL OF MAIN CIRCUIT BOARD COVER WILL VOID WARRANTY.

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