46
SS-SVX10H-EN
Service Test Modes for ReliaTel™
™ Controls
Test Modes
Upon power initialization, the RTRM performs self-
diagnostic checks to ensure that all internal controls are
functional. It also checks the configuration parameters
against the components connected to the system. The
system LED located on the RTRM module is turned
“
“O
On
n”
” within one second of power-up if internal
operation is okay.
Use one of the following “
“T
Te
esstt”
” procedures to bypass
some time delays and to start the unit at the control
panel. Each step of unit operation can be activated
individually by temporarily shorting across the “
“T
Te
es
stt”
”
terminals for 2 to 3 seconds. The system LED located
on the RTRM module will blink when the test mode has
been initiated. The unit can be left in any “
“T
Te
esstt”
” step
for up to one hour before it will automatically
terminate, or it can be terminated by opening the main
power disconnect switch. Once the test mode has been
terminated, the system LED will glow continuously and
the unit will revert to the “
“S
Sy
ys
stte
em
m”
” control.
There are three methods in which the “
“S
Se
errv
viic
ce
e T
Te
es
stt”
”
can be cycled at LTB-Test 1(T1) and LTB-Test 2 (T2).
Step Test Mode
This method initiates the different components of the
unit, one at a time, by temporarily shorting across the
two test terminals for 2 to 3 seconds.
For the initial start-up of the unit, this method allows
the technician to cycle a component “
“O
On
n”
” and have up
to one hour to complete the check. Service Test Mode
will be ignored if a short is present across Test 1 and
Test 2 at start-up.
Resistance Test Mode
This method can be used for start-up when a decade
box for variable resistance outputs is available. This
method initiates the different components of the unit,
one at a time, when a specific resistance value is placed
across the two test terminals. The unit will remain in
the specific test mode for approximately one hour even
though the resistance is left on the test terminals.
Table 10.
Service test guide for component operation
TEST STEP
MODE
FAN
COMP 1
COMP 2
HEAT 1
HEAT 2
OHMS
1
Fan
On
Off
Off
Off
Off
2.2K
2
Cool 1
On
On
(a)
Off
Off
Off
4.7K
3
(b)
Cool 2
On
On
On
Off
Off
6.8K
4
Heat 1
On
Off
Off
On
Off
10K
5
Heat 2
On
Off
Off
On
On
15K
(a)
The condenser fans will operate any time a compressor is ON.
(b)
Steps for optional accessories and non-applicable modes in unit will be skipped.
Auto Test Mode
This method is not recommended for start-up due to
the short timing between individual component steps.
This method initiates the different components of the
unit, one at a time, when a fixed jumper is installed
across the test terminals.
The unit will start the first test step and change to the
next step every 30 seconds. At the end of the test
mode, control of the unit will automatically revert to the
applied “
“S
Sy
ysstte
em
m”
” control method. For unit test steps,
test modes, and step resistance values to cycle the
various components, refer to
.
