Trane Foundation GCC180-300, Установка, эксплуатация и обслуживание

Страница: 45 / 52

RT-SVX51L-EN 45
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 (for example, 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:
• CO
2
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.
Table 20, p. 45 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.
Table 20. FDD troubleshooting
FAULTS
TESTS
Air temp. sensor
failure / fault
Not economizing
when it should
Economizing when it
should not
Damper not
modulating
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
Resetting Cooling and Heating
Lockouts
Cooling Failures and Heating Lockouts are reset in an
identical manner.
Method 1 section explains resetting the system from the
space; Method 2 section 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
Troubleshooting