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RT-SVX50M-EN
Troubleshooting
WARNING
Hazardous Service Procedures!
Failure to follow all precautions in this manual and on
the tags, stickers, and labels could result in death or
serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical
hazards, MUST follow precautions in this manual and
on the tags, stickers, and labels, as well as the
following instructions: Unless specified otherwise,
disconnect all electrical power including remote
disconnect and discharge all energy storing devices
such as capacitors before servicing. Follow proper
lockout/tagout procedures to ensure the power can
not be inadvertently energized. When necessary to
work with live electrical components, have a qualified
licensed electrician or other individual who has been
trained in handling live electrical components perform
these tasks.
Standard Troubleshooting
Failures
Cooling Failure
1. Cooling and heating set points (slide pot) on the
thermostat have failed.
Note: 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.
Note: 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.
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 16, p. 39 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.
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