Crown CSHB60-90XE operation manual Comfort Check, Troubleshooting Charts

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All installations and services must be performed by qualified service personnel.

Check and plug leaks in return ducts, cabinet

Comfort Check

Check proper airflow settings

Low static pressure for lowest noise

Set low continuous-fan CFM

T’stat in bad location?

Figure 3: ECM PIN CONNECTORS

Troubleshooting table above and Figure 2 adapted from GE Industrial Systems publication GED-7161C, “Troubleshooting GE ECM – Driven Systems”.

C. TROUBLESHOOTING CHARTS

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Contents Model Index Section Beginning EAC Board Layout with Switches Wiring & SwitchesOutputs Operating Modes Blower Delay Cooling Speed Set-ups CFM TablesHeating Speed Set-ups Symptom CAUSE/PROCEDURE II. ECM Trouble Shooting A. Diagnostc FeaturesGeneral Guidelines to Troubleshooting GE ECM Driven Systems DON’T Excessive noiseEvidence of Moisture Perform Moisture CheckComfort Check Troubleshooting ChartsYES Is There Supplied to MOTOR? Disconnect 16 PIN Sequence of Operation ECM PSC Replacement