Ingersoll-Rand ReliaTel, Manual, Page: 112 / 176

112 RT-SVD03L-EN
Table 84. Troubleshooting (continued)
Symptom
Probable Cause and solution
Displayed zone
temperature reads
“99”.
Space temperature is above or below
the measurable range of the sensor.
Displayed zone
temperature reads
“Sh” and the COOL
FAIL icon is
illuminated.
Verify that option 11 in Option Menu is
set correctly. If correct, check the
wiring from the remote sensor at
terminals S1 and S2 for a shorted
condition.
Displayed zone
temperature reads
“oP” and the COOL
FAIL icon is
illuminated.
Verify that option 11 in Option Menu is
set correctly. If correct, check remote
sensor wiring at terminals S1 and S2
for an open circuit condition.
Programmable sensor
will not respond to
keypad selections
Check lower left corner of display for a
padlock icon. If displayed, press and
hold the Time (+) and (-) key until the
icon goes away.
Fan mode is set to on,
but does not run
during unoccupied
mode. Periods
Check option 6 in Option menu setup
for Auto selection during unoccupied.
Table 84. Troubleshooting (continued)
Symptom
Probable Cause and solution
Buzzer indicates
System Failure, Check
filter or service is
required.
Press erase key to reset filter lapse
timer. Buzzer will be reset until noon
of the next day if a system failure has
not been corrected.
sensor will not hold
override changes.
Press the HOLDTEMP button within 20
seconds after changes are made.
COOL FAIL flashes and
unit doesn’t run.
Check for varying
voltage on terminals.
Sensor not communicating with unit.
11 and 12 at the unit. If voltage is
steady at approximately 30 vdc,
check for open circuit in wiring.
COOL FAIL + HEAT
FAIL icons flash
simultaneously
Check for defective outside air sensor.
Emergency input is open. (RTRM
version 4.0) Coil Temp Sensor fail
(HP).
HEAT FAIL flashing
A heat failure has occurred. If HP unit,
the unit may be in emergency heat, or
there is a defrost problem.
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