Jackson Tempstar GP technical manual Low rinse temperature/low wash Low inlet water temperature

TROUBLESHOOTING SECTION

WARNING: Inspection, testing and repair of electrical equipment should only be performed by a qualified service techni- cian. Many of the tests require that the unit have power to it and live electrical components be exposed.

USE EXTREME CAUTION WHEN TESTING THE MACHINE.

Symptom	Possible Cause	Action
Low rinse temperature/low wash	Low inlet water temperature.	Ensure incoming water is 110 F at incoming
temperature.		point of machine, may need to increase the
		set point of the supply water heater.
	Low gas pressure.	Check gas supply pressure.
		Ensure proper operation of combination gas
		cutoff valve.
		Ensure manual gas cutoff valve is open.
		Check for kinks in flexible gas supply line.
	Improper circulation through system.	Check recirculating pump operation. Check
		for obstructions.
	T-set needs adjustment.	Ensure set point is approximately 4.25 VDC.
	Defective T-mid thermistor (Red LED light	Check Ohms reading is between 950 and
	may be flashing).	1150 Ohms when probe is at room
		temperature. Check for frayed wiring.
		Ensure connection to control board.
	Defective control board (ECB).	Perform auto-calibration. Ensure power
		supplied to board is +12 VDC. Ensure green
		LED light is flashing.
High rinse temperature.	T-set needs adjustment.	Ensure set point is approximately 4.25 VDC.
	ECO failure. (Overprotection feature is	Remove wire from ECO terminal. If burner
	faulty and does not open at 210 F).	unit turns off, ECO may be defective.
		Replace ECO.

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