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ReliaTel Control
The RTRM 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 ReliaTel
Refrigeration Module (RTRM). All
diagnostics & system status
information stored in the RTRM will
be lost when the main power is
turned "Off" .
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 Liteport LED on
the RTRM is burning
continuously. If the LED is lit, go
to Step 3.
2.
If the LED is not lit, verify that 24
VAC is presence between J1-1
and J1-2. If 24 VAC is present,
proceed to Step 3. If 24 VAC is
not present, check the unit main
power supply, check transformer
(TNS1). Proceed to Step 3 if
necessary.
3.
Utilizing "Method 1" or "Method
2" in the "System Status
Diagnostic" section, check the
following:
System status
Heating status
Cooling status
RT-SVX21F-EN
Trouble Shooting
If a System failure is indicated,
proceed to Step 4. If no failures
are indicated, proceed to Step 5.
4.
If a System failure is indicated,
recheck Steps 1 and 2. If the LED
is not lit in Step 1, and 24 VAC is
present in Step 2, the RTRM has
failed. Replace the RTRM.
5.
If no failures are indicated, use
one of the TEST mode
procedures described in the
"Unit Start-Up" section to start
the unit. This procedure will
allow you to check all of the
RTRM outputs, and all of the
external controls (relays,
contactors, etc.) that the RTRM
outputs energize, for each
respective mode. Proceed to
Step 6.
6.
Step the system through all of
the available modes, and verify
operation of all outputs,
controls, and modes. If a
problem in operation is noted in
any mode, you may leave the
system in that mode for up to
one hour while troubleshooting.
Refer to the sequence of
operations for each mode, to
assist in verifying proper
operation. Make the necessary
repairs and proceed to Steps 7
and 8.
7.
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.
8.
Refer to the individual
component test procedures if
other microelectronic
components are suspect.
System Status Checkout
Procedure
"System Status" is checked by using
one of the following two methods:
Method 1
If the Zone Sensor Module (ZSM) is
equipped with a remote panel with
LED status indication, you can check
the unit within the space. If the ZSM
does not have LED's, use Method 2.
BAYSENS010B, BAYSENS011B,
BAYSENS019A, BAYSENS020A,
BAYSENS021A & BAYSENS023A all
have the remote panel indication
feature. The LED descriptions are
listed below.
LED 1 (System)
"On" during normal operation.
"Off" if a system failure occurs or the
LED fails.
"Flashing" indicates test mode.
LED 2 (Heat)
"On" when the heat cycle is
operating.
"Off" when the heat cycle terminates
or the LED fails.
"Flashing" indicates a heating
failure.
LED 3 (Cool)
"On" when the cooling cycle is
operating.
"Off" when the cooling cycle
terminates or the LED fails.
"Flashing" indicates a cooling
failure.
LED 4 (Service)
"On" indicates a clogged filter.
"Off" during normal operation.
"Flashing" indicates an evaporator
fan failure
Below is the complete listing of
failure indication causes.
System failure
Check the voltage between terminals
6 and 9 on J6, it should read
approximately 32 VDC. If no voltage
is present, a System failure has
occurred. Refer to Step 4 in the
previous section for the
recommended troubleshooting
procedure.
45
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Troubleshooting
