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SBD TANK TYPE HEATERS
SERVICE HANDBOOK
Technical Training Department
Ashland City, TN ©2003
28
TROUBLESHOOTING THE EFFIKAL DAMPER
Condition:
Thermostat closed, damper
closed
STEP 9A
TEST BETWEEN BLACK (COMMON) AND BROWN
ON THE DAMPER BOARD
NEHT FI
tcerroc si sihT tneserp si CAV42
24VAC is not present • See Steps 1 thru 4
Check the harness plugs connecting heater
and damper for looseness or damage.
Wires are from left to right:
Black Yellow Brown Orange
• • •