Instruction/ maintenance manual of the product 37E73A-903 Emerson
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www .white-rodgers.com www .emersonclimate.com 37E73A-903 & 906 INTELLI-VENT™ W ater Heater Ther mostat Control Installation Instructions For Natural Gas Only Operator: Save these instructions f.
2 SPECIFICA TION ELECTRICAL RA TINGS: Input and Frequency: 120 V AC , 60 Hz Output Ratings: Ignitor Load: 2 Amps maximum Inducer Draft Motor: 3 Amps Full Load, 4 Amps Lock ed Rotor Current: 0.2 Amps @ 120 V A C Range of Regulation (Btu/Hr) Minimum: 30,000 Maximum: 150,000 1.
3 GROUND JO IN T UNION IN TE LLI-VE NT ™ CONTROL GAS SUPPL Y PI PE TE E DRIP LE G (SEDIMET TR AP ) 3" MINIMU M (M ANDA TO RY ) PIPE CA P SHUT -O FF VALV E 8. Open the gas shutoff valv e. 9. BEFORE TURNING ON THE APPLIANCE, CHECK THE GAS LINES FOR LEAKS.
4 T able 1. T emperature Settings Display A B C Appro ximate T emperature ( +10 o F) Appro ximate Time to Cause Injury 70 (V acation) N/A 110 115 120 5 minutes 125 130 30 seconds 135 140 5 seconds 145 150 1.5 seconds 160 under 1 second Flashing WA RNING ! Never allow small children to use a hot water tap, or to draw their own bath water .
5 A typical system wiring diagram is shown belo w . Use the water heater manuf acturer’ s wir ing diagram f or details of the installation. Alwa ys follo w the instructions supplied with the water heater , and those of the water heater man uf acturer .
6 SEQUENCE OF OPERA TIONS APPLY POWER TO APPLIA NC E IS FIELD WIRING CORRECT? DISPLAY ERROR CODE 1 OR 2 NO YES REQUEST FOR HEAT PRESENT? NO IS PRESSURE SWITCH PROVEN OPEN WITHIN 5 SECONDS? YES NO COMB.
7 SEQUENCE OF OPERA TIONS Error Indication Check, Repair , or Replace A B C 1 An open ear th ground cir- cuit to the ignition system 1. Check that the earth ground conductor is properly connected at the fuse bo x or breaker panel and the water heater .
A B C 7 The self diagnostic test f ound a problem with the gas valv e driver circuit 1. Cycle power to the w ater heater off for 10 seconds and then back on. 2. If the abov e step did not cleat the error , the INTELLI-VENT™ control must be replaced A B C 8 The self diagnostic test has detected a problem with the internal microcomputer.
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If you already are a holder of Emerson 37E73A-903, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Emerson 37E73A-903.
However, one of the most important roles played by the user manual is to help in solving problems with Emerson 37E73A-903. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Emerson 37E73A-903 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
