62-11637 7–62
P00196 HIGH DISCHARGE PRESSURE
• ACTIVATION: This alarm is generated during Test 4 of Cool Pretrip. Discharge pressure is higher than nor-
mal. (“Normal” discharge pressure for systems operating in the Cool Mode can be estimated by taking the
temperature of the air entering the condenser coil (Ambient Air Temperature AAT) and adding 30 F (16.6
C) to it, then looking at a pressure temperature chart-see Table 8–5 for the corresponding pressure.)
• UNIT CONTROL: Alarm Only
• 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, page 7-2.) 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 cor-
rect 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 installed in each position. Mechanical connections are the same. The
CDT should have a red dot on it while the CST has a blue dot.
2. Check System Pressures
Install manifold gauge set and check and compare compressor discharge & suction pressures with
those shown in Unit Data. Refer to Section 8.9.12 for instruction on comparison.
3. Check High Side Operating Conditions
Refer to procedure for alarm 00013 HIGH DISCHARGE PRESSURE. Alarm condition must be cor-
rected and the alarm cleared to continue.
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