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Electrical Maintenance (Rev 6/98)
47
A code 02 (coil sensor fault) is a faulty evaporator coil sen-
sor. If the evaporator coil sensor fails during defrost, the
microprocessor defrost timer automatically terminates
DEFROST in 30 or 45 minutes. Test the evaporator coil
sensor. Repair or replace the evaporator coil sensor or
microprocessor.
Air Switch Testing And Adjustment
Before testing or adjusting the air switch, check the clear
plastic tubing and black plastic tubing to the evaporator coil.
Be sure they are not obstructed or crushed. Check the
probes in the evaporator housing to be sure they are in the
proper position and make sure they are not obstructed.
1.
Remove the spastic sensing tubing from both sides of
the air switch.
2.
Disconnect one wire at the switch terminal. Connect a
test light or continuity tester to the two terminals used
on the switch.
3.
Connect the test equipment (TK 204-442 and TK 204-
494) to the hose fitting on the side of the air switch
stamped BLACK.
Air Switch Test
4.
Pressurize the hose until the continuity tester indicates
a completed circuit. Now read the dial of the test gauge.
This is the setpoint of the air switch (correct reading is
35.6 ± 2 mm (1.4 ± 0.08 in.) H
2
0. Release the pressure.
5.
If the switch is out of calibration, pressurize the hose
again until the tester indicates 35.6 mm (1.4 in.) H
2
0.
Turn the adjustment screw clockwise or counterclock-
wise until the switch closes and the continuity tester
1.
Continuity Tester
2.
Adjustment Screw
3.
Squeeze Bulb (P/N 204-494)
4.
Pressure in Inches of Water (P/N 204-442)
Summary of Contents for Super II SR+
Page 4: ......
Page 10: ...ii ...
Page 14: ...4 ...
Page 22: ...Unit Description Rev 6 98 12 Front View AEA1350 ...
Page 23: ...Unit Description Rev 6 98 13 Right Side Door Open AEA1351 ...
Page 24: ...Unit Description Rev 6 98 14 Left Side Doors Open AEA1352 ...
Page 26: ...Operating Instructions Rev 6 98 16 Control Box Cover AEA1354 ...
Page 34: ...24 ...
Page 42: ...Electronic Controls Rev 6 98 32 SOFTWARE REVISION 04XX ALARMS AEA1358 ...
Page 82: ...72 ...
Page 90: ...80 ...
Page 116: ...106 ...
Page 120: ...110 ...
Page 130: ...120 ...
Page 141: ...131 Schematic Diagram SBIII SII RMNII 30 SR MPIV ...
Page 142: ...132 Wiring Diagram SII SBIII RMN30 SR MPIV Page 1 of 4 ...
Page 143: ...133 Wiring Diagram SII SBIII RMN30 SR MPIV Page 2 of 4 ...
Page 144: ...134 Wiring Diagram SII SBIII RMN30 SR MPIV Page 3 of 4 ...
Page 145: ...135 Wiring Diagram SII SBIII RMN30 SR MPIV page 4 of 4 ...