Diagnostics
CNT-SVX06B-EN 65
Normal—Power Up On start-up Fan unaffected
Valves unaffected
Electric heat unaffected
Compressors unaffected
Damper unaffected
Automatic
Table 19. Diagnostics for 1 heat/1 cool configurations (Continued)
Diagnostic Probable cause Consequences
Diagnostic type
1
1 For more information on types of diagnostics and how they are cleared from the controller, see “Clearing diagnos-
tics” on page 66.
2 When the entering water temperature is required but not present, the 1 heat/1 cool unit generates a diagnostic to
indicate the sensor loss condition. The controller automatically clears the diagnostics once a valid entering water
temperature value is present (nonlatching diagnostic). When the entering water temperature fails, the controller pro-
hibits all cooling operating, but allows the delivery of heat when heating is required. In cool mode, all cooling is
locked out, but normal fan and damper operation is permitted.
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