Trane Foundation EBC180, Инструкция по установке, эксплуатации и обслуживанию

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RT-SVX50J-EN 41
Troubleshooting
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Standard Troubleshooting
Failures
Cooling Failure
1. Cooling and heating set points (slide pot) on the
thermostat have failed.
N No otte e:: Not used on electromechanical units.
2. CC1 or CC2 24 Vac control circuit has opened. Check
CC1 and CC2 coils and Frostat™ status. Check the
status of the LED indicator in LSD:
a. LED will be flashing to indicate that a Safety
Input has opened while a Y call is present.
b. Compressor lockout is indicated by a solid
(nonflashing) red LED.
To reset LSD - Power cycle 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.
N No otte e:: 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 (for example, replaced faulty
sensor), the alarm can be cleared from the display.
N No otte e:: 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.
N No otte e:: 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. 42 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.