Jackson 24P-NSU Service Manual - Thermostat Adjustment

THERMOSTAT ADJUSTMENT 

The thermostat can be adjusted by turning screw #1 (see picture) on the thermostat control box cover. 

(Remember the present setting. In case the problems are elsewhere In the control circuit.) A CW rotation is 

used to obtain a lower temperature setting and a CCW rotation is used to obtain a higher temperature setting. 

A 1/4 turn of screw #1 changes the temperature approximately 15 F. If screw #1 Is turned all the way to its 

stop in either direction, adjust screw #2 as follows. 

Note: Do not touch the screw sealed with red paint. When adjusting screw #2, power should be

disconnected during adjustment.      

Set screw #1 so that it can be turned equal distances in either direction, then: 

— if screw #1 stopped while turning in CW direction, turn screw #2 in CW direction, slowly and only 1/8 of a 

turn or less per complete cycle of the unit. 

— If screw #1 stopped while turning in CCW direction, turn screw #2 in CCW direction, slowly and only 

1/4 of a turn or less per complete cycle of the unit:  

Three-fourths of a turn will bring the thermostat to approximately the same setting obtained where screw #1 

stopped. Check the present temperature setting before attempting any further adjustments. Use screw #1 for 

any further adjustments. 

Making large moves In adjusting may cause misalignment, thus increasing chances that further adjustment-

cannot be made and thermostat will have to be replaced. 

12 

Thermostat 

P/N 0170018 Rinse 

       0170023 Wash 

SCREW #1