Troubleshooting
32
RT-SVX058C-EN
b. Compressor lockout is indicated by a solid (non-
flashing) red LED.
To reset LSD - Cycle power on "R" input.
Simultaneous Heat and Cool Failure
•
Emergency Stop is activated.
Low Leak Economizer
(LLE) Troubleshooting
1. The economizer controller provides alarm messages
that display on the 2-line LCD. If one or more alarms are
present and there has been no keypad activity for at
least 5 minutes, the Alarms menu displays and cycles
through the active alarms.
Note:
You can also navigate to the Alarms menu at any
time.
2. Once the alarm has been identified and the cause has
been removed (e.g. replaced faulty sensor), the alarm
can be cleared from the display.
Note:
If an alarm still exists after you clear it, it re-displays
within 5 seconds.
To Clear an Alarm
Once the alarm has been identified and the cause has been
removed (e.g. replaced faulty sensor), the alarm can be
cleared from the display.
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.
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
