Trane IntelliPak I - Page 125

RT-SVP04F-EN 125
System Testing & Troubleshooting
BAS Module
Communications Failure
Problem: The RTM has lost
communications with the LCI
or BCI.
Check: Check field/ unit wiring
between RTM and LCI or BCI
Module.
The RTM has lost
communications with the LCI
or BCI Module.
All active commands and
SETPOINTs provided by the
network through the LCI or
BCI will be cancelled and/ or
ignored. Where the network
has been designated as
SETPOINT source, local HI
default SETPOINTs will be
used.
(PAR) An automatic reset
occurs after communication
has been restored.
BAS/Network Comm
Failure
Problem: The LCI or BCI has
lost communications with
Tracer.
Check: Network (Tracer or 3rd
party building control panel) is
powered up and running
properly. If so, check unit
wiring between LCI or BCI and
network (Tracer or 3rd party
building control panel).
The LCI or BCI has lost
communications with the
Network for > 15 minutes.
All active commands and
SETPOINTs provided by the
network through the LCI or
BCI will be cancelled and/ or
ignored. Where the network
has been designated as
SETPOINT source, local HI
default SETPOINTs will be
used.
(PAR) An automatic reset
occurs after communication
between the network and LCI
or BCI has been restored.
Blocked Air Return Failure
Problem: There is no return air
flow indication.
Check: Mixed air section
damper linkages and actuators
for proper travel and operation
and return duct for
impediments to airflow. Check
wiring between mixed air
pressure sensor and VCM
module. Check wiring between
all damper actuators and
control box.
The low pressure limit on the
VCM module is detected closed
for 1 second.
A "Supply Air Pressure
Shutdown" signal is sent to
the following functions;
a. Compressor Staging
Control,
b. Economizer Actuator
Control,
c. Heat Operation,
d. Supply Fan Control
e. IGV Actuator Control
f. Return Fan Control
g. Exhaust Fan Control
h. Exhaust Actuator Control
(PMR) A manual reset is
required after the diagnostic is
set. It can be reset by the HI
or Tracer, or by cycling power
to the RTM.
Compressor Contactor Fail
Circuit 1
Com pr e sso r Co nta cto r Fail -
Circuit 1
Problem: The Compressor
Contactor for Circuit. #1 has
malfunctioned.
The circuit #1 compressor
proving input is detected
closed continuously for more
than 3 seconds while neither
compressor output on circuit
#1 is closed.
A "Lockout Circuit #1 request
is issued to the Compressor
Staging Control function.
(PMR) A manual reset is
required after the diagnostic is
set. It can be reset by the HI
or Tracer, or by cycling power
to the RTM.
Comp Contactor Fail -
Circuit 2
Problem: The Compressor
Contactor for Circuit. #2 has
malfunctioned.
The circuit #2 compressor
proving input is detected
closed continuously for more
than 3 seconds while neither
compressor output on circuit
#2 is closed.
A "Lockout circuit #2 request
is issued to the Compressor
Staging Control function.
PMR) A manual reset is
required after the diagnostic is
set. It can be reset by the HI
or Tracer, or by cycling power
to the RTM.
DIAGNOSTIC DISPLAYED REASON FOR DIAGNOSTIC UCM’S REACTION RESET REQUIRED