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American Water Heater (A)BCG38T500-8P TEST 4 UPPER TEMPERATURE PROBE CONTINUITY CHECK, Ohms, Test

Models: (A)BCG38T500-8P (A)BCG385T500-8N

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TEST 4: UPPER TEMPERATURE PROBE CONTINUITY CHECK

TROUBLESHOOTING

TEST 4: UPPER TEMPERATURE PROBE CONTINUITY CHECK

Conditions:

•Power On - Water below temperature set point.

•Red, water heater control “Reset Status” LED-OFF

•“Call For Heat” LED off.

	TEST 4		Upper Temperature probe continuity check
			Red wire to red wire - Turn supply power “Off” for this test

	IF		then
	Test indicates no continuity		replace probe.
	Continuity is indicated		Probe should be okay.
			(Also verify Ohms resistance for water temperature. Reading will be approximate.)

Figure 23

Table 4

	OHMS RESISTANCE TABLE

° F		Ohms
70°		11,884
120°		3,759
140°		2,488
180°		1,169

Servicing should only be performed by a Qualiﬁed Service Agent

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American Water Heater (A)BCG38T500-8P TEST 4 UPPER TEMPERATURE PROBE CONTINUITY CHECK, Ohms Resistance Table, Conditions

Contents

INSTALLATION CONSIDERATIONS - PRE SERVICE MODELS ABCG385T500-8N ABCG38T500-8PService Handbook CHECKS - OPERATION & SERVICE -TROUBLESHOOTINGCOMMERCIAL GAS WATER HEATER SERVICE MANUAL TABLE OF CONTENTS Servicing should only be performed by a Qualiﬁed Service AgentINTRODUCTION SERVICE WARNINGSERVICE REMINDER QUALIFICATIONSTOOLS REQUIRED REQUIREMENTSINSTRUCTION MANUAL TOOLS OPTIONALGAS PRESSURE REQUIREMENTS INSTALLATION CONSIDERATIONSWATER PIPING Closed Water SystemsAIR REQUIREMENTS Air SupplyInsufficient Make-up Air, Negative Air Pressure, and Downdrafts Make-up Air Direct Communication with Outdoors CLEARANCES WATER HEATER Contaminated AirCLEARANCES EXTERIOR VENTING OPERATION AND SERVICE SEQUENCE OF OPERATIONELECTRICAL SEQUENCE Servicing should only be performed by a Qualiﬁed Service Agent WIRING DIAGRAMOPERATION AND SERVICE WIRING DIAGRAM FOR ABCG385T500-8N/8PServicing should only be performed by a Qualiﬁed Service Agent OPERATING SEQUENCE - FLOW CHARTOPERATION AND SERVICE Below 0.1 uA DC Flame SenseGAS CONTROL VALVE Measuring Gas PressuresManifold Pressure Adjustment Main Valve Solenoid ConnectionsServicing should only be performed by a Qualiﬁed Service Agent GAS CONTROL VALVE/BURNER AREA VIEWOPERATION AND SERVICE Honeywell Gas Valve Main Burner ShieldBLOWER PROVER SWITCH - SETTINGS THERMOSTAT AND IGNITION CONTROL BOARD VIEW OPERATION AND SERVICEServicing should only be performed by a Qualiﬁed Service Agent OPERATION AND SERVICE WHITE RODGERS INTEGRATED CONTROL - THERMOSTATWHITE RODGERS IGNITION CONTROL BOARD Servicing should only be performed by a Qualiﬁed Service AgentPRE-SERVICE CHECKLIST 1 FLASH System has locked out after 3 trials for ignition TROUBLESHOOTINGIGNITION CONTROL BOARD ERROR CODES 2 FLASHES4 FLASHES 6 FLASHES Reversed polarity in power supply3 FLASHES 7 FLASHES8 FLASHES Igniter not sensed and/or water heater not grounded CONTINUOUS FLASHCONTINUOUS ON Internal control board failure ACTION INTEGRATED HEATER CONTROL DISPLAY LIGHTSINDICATION STATUSTEST TEST 1 120 VAC TO HEATER CHECKConditions thenServicing should only be performed by a Qualiﬁed Service Agent TEST 2 POLARITY CHECKTROUBLESHOOTING Check from on/off switch center and white wire terminals to groundSee Ignition Control Board Error Codes TEST 3 CONTINUITY CHECK OF HIGH LIMIT ECOThen TROUBLESHOOTINGOhms TEST 4 UPPER TEMPERATURE PROBE CONTINUITY CHECKOHMS RESISTANCE TABLE TROUBLESHOOTINGServicing should only be performed by a Qualiﬁed Service Agent TEST 5 CALLING FOR HEAT - NO BLOWER OPERATIONTROUBLESHOOTING ConditionsServicing should only be performed by a Qualiﬁed Service Agent TEST 6 BLOWER ON, NO IGNITIONTROUBLESHOOTING Prover SwitchServicing should only be performed by a Qualiﬁed Service Agent TEST 7 BLOWER ON, BLOWER PROVER SWITCH CLOSED, NO IGNITER OPERATIONTROUBLESHOOTING Continuity check - Power off- Plug removed from E4 receptaclesServicing should only be performed by a Qualiﬁed Service Agent TEST 8 IGNITER HEATS, NO MAIN BURNERTROUBLESHOOTING TESTServicing should only be performed by a Qualiﬁed Service Agent TEST 9 IGNITER HEATS, NO MAIN BURNERTROUBLESHOOTING ConditionsServicing should only be performed by a Qualiﬁed Service Agent TEST 10 MAIN BURNER IGNITION FOR LESS THAN FIVE SECONDSTROUBLESHOOTING ConditionsServicing should only be performed by a Qualiﬁed Service Agent TEST 11 WATER HEATER SHUTTING OFF BELOW SETTINGTROUBLESHOOTING WATER HEATER SHUTTING OFF BELOW SETTINGServicing should only be performed by a Qualiﬁed Service Agent Servicing should only be performed by a Qualiﬁed Service Agent P.O. Box 1597, Johnson City, TN Phone 800-456-9805 Fax Copyright 2010 American Water Heater Company. All rights reserved