BASO H43 Series User Manual
Page 4

4 H43 Series BASO Automatic Pilot Valve with Manual Shutoff Installation Instructions
Pilot Servicing
If pilot flame problems occur, check the following:
• If the pilot flame burns yellow, it may be due to dirt
or lint covering the lower portion of the pilot 
burner. Remove this using a soft brush or a 
vacuum. 
• A flame approximately 1/2 in. (12.7 mm) high must
surround the thermocouple tip (Figure 3).
• Because this is an electrical connection, the
thermocouple lead connection to the BASO power 
unit must be clean and free of grease. 
Approximately
1/2 in. (12.7 mm)
fi
g3
Figure 3: Flame Position
Repairs and Replacement
!
WARNING: Risk of Explosion or Fire.
Shut off the gas supply at the main manual shutoff 
valve before installing or servicing the H43. Failure 
to shut off the gas supply can result in the release of 
gas during installation or servicing, which can lead to 
an explosion or fire, and may result in severe 
personal injury or death. 
Field repairs must not be made to the H43 valve. If the 
thermocouple meets the output listed in Table 1 and 
the valve does not function, replace the entire valve. 
Any attempt to repair this assembly voids the 
manufacturer’s warranty. For a replacement valve, 
contact the original equipment manufacturer or the 
nearest BASO Gas Products distributor. 
