York Sun Premier GZA1M Series Start-Up & Operation page 119

Table 33: Faults List (Continued)
Fault Type
ServicePriority
ServicePriority
ServicePriority
ServicePriority
ServicePriority
ServicePriority
ServicePriority
ServicePriority
ServicePriority
ServicePriority
ServicePriority
ServicePriority
ServicePriority
ServicePriority
Service
Service
Service
Service
Service
Service
Service
Service
YORK
Description
HGRH locked out - valve stuck open
HGRH locked out - valve stuck closed
Main controller calibration error
Option controller calibration error
Condenser 1 controller calibration error
Condenser 2 controller calibration error
Building system interface board controller
calibration error
DAT sensor failure
OAT sensor failure
RAT sensor failure
Building pressure sensor failure
Return fan pressure sensor failure
Evaporator coil temperature 1 sensor failure
C1A shutdown - exceeded operating envelope
limits
Circuit 1 shutdown due to safety chain
Circuit 2 shutdown due to safety chain
MAT sensor failure
Outside air humidity sensor failure
Pre-filter pressure sensor failure
Final filter pressure sensor failure
Return air humidity sensor failure
Heat entering temperature sensor failure
Start-Up & Operation Guide | 5587001-YSG-A-520
Caused By
HGRH valve, hot gas flowing to reheat coil
when flow expected to be OFF
HGRH valve, hot gas not flowing to reheat
coil when flow expected
Cycle power to the unit. If error returns,
contact technical support
Cycle power to the unit. If error returns,
contact technical support
Cycle power to the unit. If error returns,
contact technical support
Cycle power to the unit. If error returns,
contact technical support
Cycle power to the unit. If error returns,
contact technical support
Sensor input out of expected range. Open
or shorted circuit
Sensor input out of expected range. Open
or shorted circuit
Sensor input out of expected range. Open
or shorted circuit
Sensor input out of expected range. Open
or shorted circuit
Sensor input out of expected range. Open
or shorted circuit
Sensor input out of expected range. Open
or shorted circuit
Variable speed drive compressor
envelope control: This output shows
disabled when a shutdown occurred due
to the variable speed drive compressor
exceeding its operating envelope limits.
The rule is that the compressor is to
remain off for 10 minutes.
One of the safety chain switches in circuit
1 has opened
One of the safety chain switches in circuit
2 has opened
Sensor input out of expected range. Open
or shorted circuit
Sensor input out of expected range. Open
or shorted circuit
Sensor input out of expected range. Open
or shorted circuit
Sensor input out of expected range. Open
or shorted circuit
Sensor input out of expected range. Open
or shorted circuit
Sensor input out of expected range. Open
or shorted circuit
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