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00109 CHECK 1EVCON COIL
• ACTIVATION: Evaporator fan motor contactor (1EVCON) circuit is shorted or open.
• UNIT CONTROL: Alarm only.
• RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit off,
then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the active
alarm should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if
any active alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1. Check 1EVCON
a. Inspect contactor coil and terminals. Verify there is no damage to coil, and no damage or corrosion
to terminals.
b. Check contactor coil resistance. Refer to Section 2.10 for contactor coil resistance values. Cannot
be open (infinite ohms), shorted (Zero Ohms), or shorted to ground.
2. Check 1EVCON Using Component Test Mode
a. Use Component Test Mode to energize 1EVCON. (Refer to Section 5.3.2.) Verify Current Draw on
Component Test Mode Screen. Refer to Section 2.10 for correct electrical values.
b. Check coil voltage between A1 and A2. Verify 12 VDC between A1 & A2.
c. Check resistance at contacts. Verify contacts are closed at L1-T1, L2-T2, L3-T3.
3. Check 1EVCON Wiring - Inspect harness & control box connector pins & terminals. (See wiring sche-
matic Section 10.3.) Verify there is no physical damage to harness. Verify there is no damage, moisture,
or corrosion in connectors.
00114 CHECK LIV CIRCUIT
• ACTIVATION: A problem has been detected in the LIV coil circuit. If this alarm is activated while the APX
Control System is calling for LIV to be energized, the circuit is detected shorted. If this alarm is activated
at any other time, the circuit is detected open.
• UNIT CONTROL: Alarm only.
• RESET CONDITION: Auto Reset when the LIV coil current draw is normal, or alarm may be manually
reset via keypad or by turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the active
alarm should clear itself (refer to reset condition above). Operate the unit through the appropriate modes to see
if any active alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1.
Check Coil Wiring
- Inspect coil & connector pins & terminals. (See wiring schematic
Section 10.3
.) Ver-
ify there is no physical damage to the coil. Verify there is no damage, moisture or corroded pins in plug.
2. Check Current Draw
a. Use Component Test Mode to test actual current draw of the circuit. (Refer to Section 5.3.2.) View
current draw in Component Test Mode screen. Refer to Section 2.10 for normal current values.
b. Check for voltage at the coil plug between pins A (+) and B (ground). Voltage should be
approximately 12 VDC.
3. Check Coil - Check coil resistance. View current draw in Data List. Refer to Section 2.10 for normal cur-
rent values.
4. Check Circuits With Another Coil - Substitute known good coil and clear alarm. Start unit, run for 30
seconds. If alarm does not reoccur, replace failed coil.
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