PEERLESS PureFire PFC-625 Installation, Operation & Maintenance Manual page 66

TROUBLESHOOTING
Table 10.3: Warning Errors
Error
Error Display
Number
200 CC_LOSS_COMMUNICATION
202 APP_SELECTION_ERROR
204 OUTDOOR_WRONG
205 T_SYSTEM_WRONG
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Cascade System:
Managing cascade control lost communication with one of the depending controls.
– Check if expected number of dependent boilers are all powered on and wired to managing
boiler.
– Check for broken wires or bad connections on terminals #24 & #25 if dependent boilers or
#26 & #27 if managing boiler.
– If error persists, reference proper connection and set up in Section 8 of this manual.
Unknown appliance model is selected.
Verify correct appliance model selection using Table 8.5.2.1 in this manual.
Outdoor sensor is either open or shorted.
Remove the wires from terminals #30 &#31 on the boiler and check the resistance between
them.
– If this reading is below 3000Ω check the reading at the sensor.
– If the reading is the same at the sensor, replace the sensor.
– If this reading is higher at the sensor, replace the wiring.
System sensor is either open or shorted.
Remove the wires from terminals #28 &#29 on the boiler and check the resistance between
them.
– If this reading is below 3000Ω check the reading at the sensor.
– If the reading is the same at the sensor, replace the sensor.
– If this reading is higher at the sensor, replace the wiring.
Note: Outdoor reset will not function with this error present.
Corrective Actions