A.O. Smith BTH 150 - Normal Operating Indications

A. O. Smith Water Products Company Service Handbook
Irving, Texas 2000
©
Training Department
15
CYCLONE BTH
NORMAL INDICATIONS / READINGS
DURING CALL FOR HEAT
Tank temperature below control setting
(to check control setting, press reset button)
• On/off switch “on”
Note: Power must be on at least 4 seconds before reset can be pressed to indicate control set-
ting.
• Control panel indication lights “on”
• On/off switch light “on”
• 120 VAC
• 24 VAC
• High limit
• Blower fan (while fan is running)
• Pressure switch (while blower is running)
• Control status
• Thermostat “on”
• Gas valve (during 4 second trial for ignition and while
burner is on)
• Current average tank water temperature displayed
DISPLAY PANEL (CONTROL PANEL)