RT-SVX34R-EN
141
Table 80. Component failure mode (continued)
COMPONENT FAILURE RESPONSE NORMAL RANGE DIAGNOSTIC
HSP and CSP for CV or SZ VAV
are both lost.
Cannot control at ZSM, unit
using RTRM Default Mode.
100 to 900 Ohms approx. Use
ZSM Test Procedures.
If a sensor is used at RTRM J6-1 and J6-2,
Cool Failure Output at RTRM J6-8 to J6-6
“COOL” LED Blinks at ZSM. If RTRM senses
a zone temp input and then it is lost,
(ZTEMP) Zone Temperature
Sensor CV, SZ VAV, or VAV
during Unoccupied mode.
No Heating or Cooling ZSM
“Fan” selection switch
operates IDM during
Unoccupied Mode.
-40 TO 150 F, 346K to 2.1K
CV Cool Failure Output at RTRM J6-8 to J6-
6 “COOL” LED Blinks at ZSM
TC01, TCO2, TC03 High Temp
Limit
Heat goes off, IDM runs
continuously.
Normally Closed, Open 135 F,
Reset 105 F.
Heat Failure Output at RTRM J6-7 to J6-6
“HEAT” LED Blinks at ZSM.
(LPC1) Low Pressure Control
Compressor CPR1 will not
operate.
Open 25 PSIG, Close 41 PSIG.
Possible Cool Failure at RTRM J1-8 to
Ground, 0 VAC. “COOL” LED Blinks at ZSM.
(LPC2) Low Pressure Control
Dual Circuits Only
Compressor CPR2 will not
operate.
Open 25 PSIG, Close 41 PSIG.
Possible Cool Failure at RTRM J3-2 to
Ground, 0 VAC. “COOL” LED blinks at ZSM.
(CCB1)
Compressor CPR1 will not
operate.
Normally Closed. range varies
by unit.
Cool Failure Output at RTRM J6-8 to J6-6
“COOL” LED blinks at ZSM.
(CCB2 or CCB3) Compressor
Overload
Compressor CPR2 or CPR3 will
not operate.
Normally Closed. range varies
by unit.
Cool Failure Output at RTRM J6-8 to J6-6
“COOL” LED blinks at ZSM.
(HPC1) High Pressure Control
Compressor CPR1 will not
operate.
Open 650 psig, Close 550 psig
Cool Failure Output at RTRM J6-8 to J6-6
“COOL” LED blinks at ZSM.
(HPC2) High Pressure Control
Compressor CPR2 or CPR3 will
not operate.
Open 650 psig, Close 550 psig
Cool Failure Output at RTRM J6-8 to J6-6
“COOL” LED blinks at ZSM.
(WTL1) Winding Temperature
Limit
Compressor CPR1 will not
operate.
Normally Closed
Cool Failure Output at RTRM J6-8 to J6-6
“COOL” LED blinks at ZSM.
(WTL2 or WTL3) Winding
Temperature Limit
Compressor CPR2 or CPR3 will
not operate.
Normally Closed
Cool Failure Output at RTRM J6-8 to J6-6
“COOL” LED blinks at ZSM.
(CC1) Compressor Contactor
24 VAC coil
Compressor CPR1 will not
operate.
Varies by unit
Cool Failure Output at RTRM J6-8 to J6-6
“COOL” LED blinks at ZSM.
(CC2 or CC3) Compressor
Contactor 24 VAC coil
Compressor CPR2 or CPR3 will
not operate.
Varies by unit
Cool Failure Output at RTRM J6-8 to J6-6
“COOL” LED blinks at ZSM.
(CFS) Clogged Filter Switch
This input is for “indication”
only and does not effect the
normal operation of the unit.
“Normal operation = 0 VAC
measured between terminals
J5-1 and Ground.
SERVICE LED ON 2-30 Vdc present at
RTRM J6-6 and J6-10.
(FFS) Supply Fan Proving
Switch
Unit will not operate in any
mode.
0.5" W.C. Normally Open
Service Failure Output at RTRM J6-6 to J6-
10 “SERVICE” LED blinks at ZSM.
(SPT) Static Pressure
Transducer VAV
Fan speed command remains
at 0%.
0.25 - 4 Vdc between J8 and
J9 on VAV
Heat and Cool Failure Output at RTRM J6-7
to J6-6 & RTRM J6-8 to J6-6 “HEAT” and
“COOL” LED's blink at ZSM.
Condensate Overflow Switch
Closed - Unit will not operate
N/A
Check to make sure the float position is not
in a tripped condition and verify an "open"
between wires connecting to RTOM J6-1,
J6-2.
Traq - CFM Setpoint and
airflow sensor
1. In the event a required Traq
control input is out of range
the Traq Minimum Position
Request will be disabled and a
static value of 10% will be
utilized for minimum position
at all times.
0 to 20000CFM
A diagnostic will be set via BAS
communication and the 2-blink code will be
initiated on the RTRM to indicate a
problem.
2. If BAS is in “remote control”
and sending a valid OA
Minimum Position Setpoint
that setpoint will be used for
OA Minimum Position,
however a diagnostic
indication will continue to be
set via the BAS and the 2-
blink code will be initiated on
the RTRM to indicate a
problem.
Traq - w/DCV loss of CO2
sensor or CO2 setpoint(s)
In the event of the loss of a
required control parameter for
DCV when paired with Traq
control the system will revert
to using on the Design
Minimum OA CFM Setpoint
and continue Traq control
functionality without DCV.
0 to 2500
The proper failure code will be set on the
RTEM and an indication of the failure will be
set via the BAS Communication packet.
DDiiaaggnnoossttiiccss
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