Johnson Controls GVC Series User Manual

Johnson Controls
Start-Up & Operation Guide | 5586996-JSG-A-0120
119
Operation
Table 33: Faults List (Continued)
Fault Type Description Caused By
ServicePriority HGRH locked out - valve stuck open
HGRH valve, hot gas owing to reheat coil
when ow expected to be OFF
ServicePriority HGRH locked out - valve stuck closed
HGRH valve, hot gas not owing to reheat
coil when ow expected
ServicePriority Main controller calibration error
Cycle power to the unit. If error returns,
contact technical support
ServicePriority Option controller calibration error
Cycle power to the unit. If error returns,
contact technical support
ServicePriority Condenser 1 controller calibration error
Cycle power to the unit. If error returns,
contact technical support
ServicePriority Condenser 2 controller calibration error
Cycle power to the unit. If error returns,
contact technical support
ServicePriority
Building system interface board controller
calibration error
Cycle power to the unit. If error returns,
contact technical support
ServicePriority DAT sensor failure
Sensor input out of expected range. Open
or shorted circuit
ServicePriority OAT sensor failure
Sensor input out of expected range. Open
or shorted circuit
ServicePriority RAT sensor failure
Sensor input out of expected range. Open
or shorted circuit
ServicePriority Building pressure sensor failure
Sensor input out of expected range. Open
or shorted circuit
ServicePriority Return fan pressure sensor failure
Sensor input out of expected range. Open
or shorted circuit
ServicePriority Evaporator coil temperature 1 sensor failure
Sensor input out of expected range. Open
or shorted circuit
ServicePriority
C1A shutdown - exceeded operating envelope
limits
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.
Service Circuit 1 shutdown due to safety chain
One of the safety chain switches in circuit
1 has opened
Service Circuit 2 shutdown due to safety chain
One of the safety chain switches in circuit
2 has opened
Service MAT sensor failure
Sensor input out of expected range. Open
or shorted circuit
Service Outside air humidity sensor failure
Sensor input out of expected range. Open
or shorted circuit
Service Pre-lter pressure sensor failure
Sensor input out of expected range. Open
or shorted circuit
Service Final lter pressure sensor failure
Sensor input out of expected range. Open
or shorted circuit
Service Return air humidity sensor failure
Sensor input out of expected range. Open
or shorted circuit
Service Heat entering temperature sensor failure
Sensor input out of expected range. Open
or shorted circuit

Johnson Controls GVC Series Specifications

General

Brand	Johnson Controls
Model	GVC Series
Category	Air Conditioner
Language	English