State Industries SBD30 199, SBD30 150, SBN85 390 (A), SBN71 120, SERIES 108 Ohms Resistance Table

Models: SBN71 120 SERIES 108 SBD30 150 SBD30 199 SBN85 390 (A)

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SBN71-120 thru SBN85-390, SBD30-150/199 TANK TYPE COMMERCIAL

GAS WATER HEATER SERVICE HANDBOOK

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.

Ohms Resistance Table

° F

Ohms

70°

11,884

 

 

120°

3,759

140°

2,488

 

 

180°

1,169

 

 

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.)

State Water Heaters

37

Technical Training Department

Ashland City, Tennessee © 2007

 

 

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State Industries SBD30 199, SBD30 150, SBN85 390 (A), SBN71 120, SERIES 108 manual Ohms Resistance Table