Hubbell Electric Heater Company J manual Troubleshooting Flow Charts, Ok?

TROUBLESHOOTING FLOW CHARTS

Is the

See 'No Display'

No Hot Water

No

display on?

flowchart

Continuous Low

Yes

Water

Is there an

See Error

Temperature

error

Yes

Message section

message?

of this manual

Verify setpoint

No

Check for loose

OK?

wires and tighten

as necessary

Verify water inlet

pressure and

temperature

No

Magnetic

Verifythat all wires

are installed and in

contactor pull

No

correct positions

OK?

in?

(see wiring

Yes

diagrams)

No

Yes

Correct fault

condition

Yes

No

Correct amps

Replace faulty

208/240V

at contactor

coil?

No

Verify T1000 configuration settings. Replace control board, if needed

Yes Replace contactor

OK?

					No
			at elements?			element
Unit properly
sized?
				Yes
	No	Plug probe end into RJ45 pigtail
		(not supplied). Check ohms
			across terminals 1 and 4			Do ohms
Replace with		(see diagrams 1 & 2). Compare
						match?
correctly sized unit		this with the ohms the thermistor
		should supply for the actual
			temperature in the tank
							No

OK? No Contact factory

Yes

No

Diagram 1

Thermistor Resistance vs Temperature (error ±3%)

70°F = 11883Ω 80°F = 9299Ω 90°F = 7334Ω 100°F = 5828Ω 110°F = 4664Ω 120°F = 3758Ω 130°F = 3048Ω 140°F = 2488Ω 150°F = 2043Ω 160°F = 1687Ω 170°F = 1400Ω 180°F = 1169Ω 190°F = 980Ω

	Replace probe		OK?
Diagram 2						To verify that
	Blue				1	there is water
Yellow					2	in the tank
	Green	Probe End		RJ45 Pigtail	3	check for
	Red				4	continuity
	Black				5	between
	White				6	yellow(#2) and
						ground.

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