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LEGEND HEATERS<br />
SERVICE WORKBOOK<br />
TEST OF WATER CIRCULATING PUMP - RUNNING<br />
LEGEND HEATERS<br />
SERVICE WORKBOOK<br />
HSI TERMINAL 7 CHECK<br />
S<br />
T<br />
E<br />
P<br />
RESULTS<br />
Test of <strong>Water</strong> Circulating Pump - Running<br />
11 Listen for Motor Operation<br />
If the: and then<br />
motor is not running the wiring connection<br />
between the pump and<br />
1R (DPST) relay terminal<br />
2 is okay*<br />
replace motor.<br />
motor is running continue to Step 12.<br />
*For capacitor and parts information see pump manufacturer’s literature.<br />
TRIAL FOR IGNITION - 4 SEC - BEGINS<br />
IGNITOR IS DRAWING AT LEAST 3 AMPS<br />
HSI CONTROL TERM 2 TO GROUND IS 120 VAC<br />
HSI Terminal 7 Check<br />
S<br />
T<br />
E<br />
P<br />
RESULTS<br />
26 Test for 24 VAC between RAM HSI control terminal 7 and RAM<br />
terminal 6 (ground).<br />
If the meter:<br />
then<br />
does not read 24 VAC,<br />
replace module.<br />
does reads 24 VAC, go to Step 27.<br />
A.O. <strong>Smith</strong> <strong>Water</strong> Products Co.<br />
Irving, Texas © 1997<br />
30<br />
Service Workbook<br />
Training Department<br />
A.O. <strong>Smith</strong> <strong>Water</strong> Products Co.<br />
Irving, Texas © 1997<br />
51<br />
Service Workbook<br />
Training Department
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