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P00180 CHECK SUCTION MOD VALVE
• ACTIVATION: With the unit running in Pretrip Test #10, after the microprocessor attempts to close CSMV,
the suction pressure fails to drop below 0 psig (0 bar).
• UNIT CONTROL: Pretrip will fail and display “PRETRIP FAIL IN TEST 10”.
• RESET CONDITION: Auto reset if Pretrip is started again or alarm may be manually reset using the dis-
play mounted keys 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, clear the
alarm(s). (Refer to Note 1 in Notes Section.) 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 Wiring to CDP & CSP
a. Verify that correct wires are connected to each transducer. Plugs to transducers are the same. The
correct wire plug must be connected to the proper transducer. The CDP connector is identified
with a red tape band while the CSP connector is identified with a blue band.
b. Verify that correct transducer is being used in each position. Mechanical connections to
transducers are the same. The Discharge Transducer should have a RED marking dot on it. The
Suction Transducer should have a BLUE marking dot on it.
2. Check SVM Module - Check indicator light on SVM Module. If light is red, it indicates that the SVM Mod-
ule should be replaced.
3. Check Compressor Operation - Check compressor operation. If compressor is defective, replace com-
pressor. Refer to Section 8.6.
4. Check Suction Modulating Valve
a. Visually inspect CSMV. Verify no damage to valve.
b. Inspect CSMV coil and wire connections. Refer to Section 8.7.7. Verify there is no damage to coil,
and no damage, moisture, or corrosion in connector.
c. Check CSMV operation. Refer to Section 8.7.7. Must perform correctly.
d. Check wires from CSMV to SVM Module. Verify there is no visual damage to wires. Continuity test
verifies that each wire is good.
P00186 CHECK EVAP OUTLET TEMP
• ACTIVATION: Evaporator Outlet Temperature Sensor (EVOT) is not within the range of -53 to +158°F
(-47 to +70°C.)
• UNIT CONTROL: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”.
• RESET CONDITION: Auto reset if Pretrip is started again, or alarm may be manually reset via keypad or
by turning the unit off, then back on again.
CORRECTIVE ACTIONS:
Check Sensor - Refer to procedure for alarm 00131 CHECK EVAP TEMP SENSOR.
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