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17. TROUBLESHOOTING GUIDE
SET THERMOSTAT TO CALL FOR HEAT
IS THE HEATER BURNING?
NO
IS THERE LINE VOLTAGE (120V) OR
24 VOLTS TO THE THERMOSTAT
CONTROL?
YES
IS THERE VOLTAGE (120V)
TO THE FAN SYSTEM?
YES
IS FAN MOTOR OPERATING?
YES
IS THERE 120 VOLTS TO
THE AIR PROVING SWITCH?
YES
IS THERE 120 VOLTS TO
THE TRANSFORMER?
YES
CONT'D
SP-MECX-EX-5A
ECO-X 36-52 / IL-X 150-200 Manual
RD: MAY 2009
RL: 05A - BA
THE SYSTEM IS WORKING PROPERLY.
YES
STOP.
→CHECK FOR DARK SPOTS OR LINES ON
THE TILE SURFACE
→'DARK' AREAS REPRESENT CRACKS OR
BLOCKAGE OF THE TILE
→SEE 'SERVICE' SECTION 15
→CHECK CIRCUIT BREAKERS OR FUSE
→CHECK ON/OFF SWITCH
→CHECK NIGHT TIME SET BACK CONTROL
NO
→CHECK FOR PROPER GAUGE OF WIRE
→(24V) CHECK CONTROL CENTER TRANS-
→CHECK ELECTRICAL CONNECTION
FROM THERMOSTAT TO FAN MOTOR
NO
→CHECK THERMOSTAT, REPLACE IF
NECESSARY
→CHECK EXHAUST FAN MOTOR, REPLACE
IF NECESSARY
NO
→CHECK ELECTRICALCONNECTION
TO AIR PROVING SWITCH
NO
→CHECK ELECTRICAL CONNECTION FROM AIR
SWITCH TO TRANSFORMER.
NO
→ENSURE AIR SWITCH IS INSTALLED PROPERLY
→ENSURE AIR HOSE IS CONNECTED PROPERLY
→CHECK AIR SWITCH, REPLACE IF NECESSARY
24
FORMER. REPLACE IF NECESSARY
FROM AIR SWITCH TO EXHAUST FAN
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