Trane Voyager Commercial, Инструкция по установке, эксплуатации и обслуживанию

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RT-SVX34R-EN 131
Diagnostics (VAV only)
If only one diagnostic is present, refer to that
diagnostic. If more than one diagnostic is present, refer
to combination diagnostics such as COOL + HEAT as
appropriate. On a BAYSENS119*, the display will show
HEAT FAIL or COOL FAIL or SERVICE (or an appropriate
combination) if a diagnostic is present.
HEAT (YC only)
• TCO1, TCO2, or TCO3 has opened.
• IGN Module lockout (see gas heat section for
troubleshooting).
COOL
• Discharge air sensor (DTS) is open, shorted, or has
failed.
• Zone temp input (RTRM J6-1) is open, shorted, or
failed during an unoccupied mode. If the unit has a
default mode input (jumper from RTRM J6-2 to
RTRM J6-4, a valid zone temp input is needed for
unoccupied heating, MWU and DWU.
• CC1 or CC2 24 VAC control circuit has opened 3
times during a cooling mode. Check CC1, CC2 coils
or any controls in series with the coils (winding
thermostat, HPC, circuit breaker auxiliary contacts).
• LPC 1 or LPC 2 has opened during the 3 minute
minimum “on” time during 4 consecutive
compressor starts. Check LPC 1 circuit by
measuring voltage from RTRM J1-8 to chassis
ground. Check LPC 2 circuit by measuring voltage
from RTRM J3-2 to chassis ground. If 24 VAC is not
present, the circuit is open. 24 Vac should present at
these terminals at all times.
SERVICE
The supply fan proving switch (FFS) has failed to open
within 40 seconds after the fan starts or has closed
during fan operation.
COOL + SERVICE
Static Pressure Transducer output voltage at RTAM J1-
3 is less than 0.25Vdc. The transducer output is open,
shorted, or the transducer is reading a negative supply
air pressure.
HEAT + COOL
• The Emergency Stop input (TB1-5 and TB1-6) is
open. Check this input at the RTRM by measuring
voltage from RTRM J1-12 to chassis ground. 24 Vac
should be present whenever the Emergency Stop
input is closed.
• Outdoor air sensor (OAS) input is open, shorted, or
has failed.
HEAT + COOL + SERVICE
• Static Pressure High Duct Static Trip. The static
pressure has exceeded 3.5" W.C. three consecutive
times.
• Smoke Detector input active.
• Supply Air Temperature Failure on units with
modulating hot gas reheat.
• Entering Evaporator Temperature Failure on units
with modulating hot gas reheat.
• RTDM Communication Failure on units with
modulating hot gas reheat.
Resetting Cooling and Ignition Lockouts
Cooling Failures and Ignition Lockouts are reset in an
identical manner. Method 1 explains resetting the
system from the space; Method 2 explains resetting the
system at the unit.
N No otte e:: Before resetting Cooling Failures and Ignition
Lockouts check the Failure Status Diagnostics by
the methods previously explained. Diagnostics
will be lost when the power to the unit is
disconnected.
Method 1
To reset the system from the space, turn the “Mode”
selection switch at the zone sensor to the “Off”
position. After approximately 30 seconds, turn the
“Mode” selection switch to the desired mode, i.e. Heat,
Cool or Auto.
Method 2
To reset the system at the unit, cycle the unit power by
turning the disconnect switch “Off” and then “On”.
Lockouts can be cleared through the building
management system. Refer to the building
management system instructions for more
information.
Zone Temperature Sensor (ZSM) Service
Indicator
The ZSM SERVICE LED is used to indicate a clogged
filter, an active Smoke Detector, or a Fan Failure trip.
Clogged Filter Switch
This LED will remain on 2 minutes after the Normally
Open switch is closed. The LED will be turned off
immediately after resetting the switch (to the Normally
Open position), or any time that the IDM is turned off.
If the switch remains closed, and the IDM is turned on,
the SERVICE LED will be turned on again after the 2
(±1) minutes.
This LED being turned on will have no other affect on
unit operation. It is an indicator only.
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