Troubleshooting
RT-SVX51B-EN
33
1.
Navigate to the desired alarm.
2. Press .
3. “ERASE?” is displayed.
4. Press .
5. “ALARM ERASED” is displayed.
6. Press
(Menu Up) to complete the action and return
to the previous menu.
Note:
If an alarm still exists after you clear it, it re-displays
within 5 seconds.
Low Leak Economizer Fault Codes
Low Leak Economizer Alarms:
•
CO2 Sensor Error
•
SYS Alarm
•
Actuator Undervoltage
•
Actuator Overvoltage
•
Actuator Stalled
The FDD system shall detect the following faults:
•
Air temperature sensor failure/fault
•
Not economizing when it should
•
Economizing when it should not
•
Damper not modulating
•
Excess outdoor air
The JADE controller is a certified FDD product (HJW10) by
California Title 24, Part 6. The FDD system is required for
meeting California Energy Commission's Title 24
regulations.
shows the various tests that
can be performed (rows) and the five faults that are
defined by FDD (columns). The 'x' means that the test has
to be conducted to see if it is causing the fault to occur.
Resetting Cooling and Heating
Lockouts
Cooling Failures and Heating Lockouts are reset in an
identical manner.
explains resetting the system from the
explains resetting the system at
the unit.
Note:
Before resetting Cooling Failures and Heating
Lockouts check the Failure Status Diagnostics by
the methods previously explained. Diagnostics will
be lost when the power to the unit is disconnected.
Method 1
To reset the system from the space, turn the “Mode”
selection switch at the thermostat to the “Off” position.
After approximately 30 seconds, turn the “Mode”
selection switch to the desired mode, i.e. Heat, Cool or
Auto.
Method 2
To reset the system at the unit, cycle the unit power by
turning the disconnect switch “Off” and then “On”.
Condensate Overflow Switch
When the condensate overflow switch is closed, a drain
pan overflow condition is indicated and it will shut unit
operations down.
Unit Economizer Control (ECA)
Verify Economizer Status by Economizer Actuator (ECA)
LED indicator:
•
OFF: No Power or Failure
•
ON: Normal, OK to Economize
•
Slow Flash: Normal, Not OK to Economize
•
Fast Flash - 1/4 Second On / 2 Seconds Off:
–
Error Code: Communications Failure
•
Pulse Flash: 1/30 Second On / 1/4 Second Off: (2
Seconds between pulse sequences)
Error Code:
•
1 Flash: Actuator Fault
•
2 Flashes: CO
2
Sensor
•
3 Flashes: RA Humidity Sensor
•
4 Flashes: RA Temp Sensor
•
6 Flashes: OA Humidity Sensor
•
7 Flashes: OA Temp Sensor
•
8 Flashes: MA Temp Sensor
•
9 Flashes: On-board Setpoint Failure
Table 11.
FDD troubleshooting
FAULTS
TESTS
Air temp.
sensor
failure/
fault
Not
econo-
mizing
when it
should
Econo-
mizing
when it
should
not
Damper
not
modula-
ting
Excess
outdoor
air
Damper Stuck
Open
x
x
x
Damper Stuck at
Minimum
x
x
Bad or Unplugged
Actuator
x
x
x
Sensor Hard
Failure
x
x
x
x
Actuator
Mechanically
Disconnected
x
x
x
x
