4-28. INTERNAL CONTROL BOARD
This task covers
Tool kit, refrigeration SVC
Extenal control panel removed
General Safty Instructions
Voltages used can kill. Always disconnect power
cord to air conditioner before performing any
internal maintenance. Shutting unit off at its
control panel does not disconnect unit power.
(1) Check for loose or missing hardware and leads. Tighten and replace as needed.
(2) Check that terminals are not loose, broken or corroded.
(3) Check components for evidence of overheating or other visible damage.
(4) Replace darnaged or defective components.
(a) Test for continuity between points L1-T1, L2-T2, and L3-T3 while pressing in on cents bar.
(b) If no continuity, replace defective contractor.