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3.
Reconnect wires to terminals J6-
11 and J6-12. Measure voltage
again between J6-11 and J6-12,
voltage should flash high and
low every 0.5 seconds. The
voltage on the low end will
measure about 19 VDC, while the
voltage on the high end will
measure from approximately 24
to 38 VDC.
4.
Verify all modes of operation, by
running the unit through all of
the steps in the "Test Modes"
section discussed in "Unit Start-
Up" .
5.
After verifying proper unit
operation, exit the test mode.
Turn the fan on continuously at
the ZSM, by pressing the button
with the fan symbol. If the fan
comes on and runs continuously,
the ZSM is good. If you are not
able to turn the fan on, the ZSM
is defective.
ReliaTel Refrigeration Module
(RTRM) Default Chart
If the RTCI loses input from the
building management system, the
RTRM will control in the default
mode after approximately 15
minutes. If the RTRM loses the
Heating and Cooling setpoint input,
the RTRM will control in the default
mode instantaneously. The
temperature sensing thermistor in
the Zone Sensor Module is the only
component required for the "Default
Mode" to operate.
Unit Operation without a
Zone Sensor
This procedure is for temporary
operation only. The economizer and
condenser fan cycling functions are
disabled.
1.
Open and Lock the unit
disconnect switch.
2.
Remove the Outside Air Sensor
(OAS) from the condenser
section of unit.
3.
Use two (2) wire nuts, to
individually cap the wires.
4.
Locate the RTRM (J6). Connect
two (2) wires to terminals J6-1
and 2.
5.
Connect the sensor (OAS) using
two wire nuts to the two (2) field
48
supplied wires that were
connected to terminals 1 and 2
on J6.
Unit Economizer Control
(ECA) Troubleshooting
ReliaTel Control
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 - 1/2 Second On / 2
Seconds Off:
Error Code:
Communications Failure
Pulse Flash:2 Seconds On / 1/2
Second Off:
Error Code:
1 Flash:Actuator Fault
2 Flashes:CO2 Sensor
3 Flashes:RA Humidity Sensor
4 FlashesRA Temp Sensor
5 Flashes:OA Quality Sensor
6 Flashes:OA Humidity Sensor
7 Flashes:OA Temp Sensor
8 Flashes:MA Temp Sensor
9 Flashes:RAM Fault
10 Flashes:ROM Fault
11 Flashes:EEPROM Fault
Electro Mechanical Control
The IGN has the ability to provide the
service personnel with some unit
diagnostics and system status
information.
Before turning the main power
disconnect switch "Off" , follow the
steps below to check the Ignition
Module (IGN).
Trouble Shooting
WARNING
Live Electrical Components!
During installation, testing, servicing
and troubleshooting of this product,
it may be necessary to work with live
electrical components. Have a
qualified licensed electrician or other
individual who has been properly
trained in handling live electrical
components perform these tasks.
Failure to follow all electrical safety
precautions when exposed to live
electrical components could result in
death or serious injury.
To prevent injury or death from
electrocution, it is the responsibility
of the technician to recognize this
hazard and use extreme care when
performing service procedures with
the electrical power energized.
1.
Verify that the LED on the IGN is
burning continuously. If the LED
is lit, go to Step 3.
2.
If the LED is not lit, verify that 24
VAC is present between R and B.
If the LED is not lit and 24 VAC is
present replace the IGN. If 24
VAC is not present, check
transformer (TNS1). Proceed to
Step 3 if necessary.
3.
If no failures are indicated, use
the TEST mode procedures
described in the "Unit Start-Up"
section or thermostat to start the
unit. This procedure will allow
you to check all of the external
controls (relays, contactors, etc)
and the IGN.
4.
Test the system through all of the
available modes, and verify
operation of all outputs, controls,
and modes. Refer to the
sequence of operations for each
mode, to assist in verifying
proper operation. Make the
necessary repairs and proceed to
Steps 5 and 6.
5.
If no abnormal operating
conditions appear in the test
mode, exit the test mode by
turning the power "Off" at the
main power disconnect switch
and removing the test mode
connections.
6.
Refer to the individual
component test procedures if
other components are suspect.
RT-SVX21F-EN
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Troubleshooting
