Trane Voyager Commercial Installation & Operation Manual page 144

Diagnostics
Table 78. Component Failure Mode
COMPONENT
(RHS) Return Humidity
Sensor
Remote Minimum
position Potentiometer
Cooling Setpoint (CSP)
for CV ZSM slide
potentiometer
Heating Setpoint (HSP)
for CV ZSM slide
potentiometer
TDL1, TDL2 or TDL3
(Temperature
Discharge Limit)
HSP and CSP for CVare
both lost.
(ZTEMP) Zone
Temperature Sensor CV
or VAV during
Unoccupied mode.
TC01, TCO2, TC03 High
Temp Limit
(LPC1) Low Pressure
Control
(LPC2) Low Pressure
Control Dual Circuits
Only
(CCB1)
(CCB2 or CCB3)
Compressor Overload
(HPC1) High Pressure
Control
(HPC2) High Pressure
Control
(WTL1) Winding
Temperature Limit
(WTL2 or WTL3)
Winding Temperature
Limit
(CC1) Compressor
Contactor 24 VAC coil
(CC2 or CC3)
Compressor Contactor
24 VAC coil
144
FAILURE RESPONSE
1. Economizer operates using
Referance Enthalpy.
1. Economizer modulates but
minimum position stays at
zero.
1. Uses HSP and CSP CSP=
HSP + 4 F or use RTRM Default
Mode.
1. Uses CSP and HSP HSP=
CSP - 4 F.
1. Comp1, Comp2 or Comp3
will not operate.
1. Cannot control at ZSM, unit
using RTRM Default Mode.
1. No Heating or Cooling ZSM
"Fan" selection switch operates
IDM during Unoccupied Mode.
Heat goes off, IDM runs
continuously.
Compressor CPR1 will not
operate.
Compressor CPR2 will not
operate.
Compressor CPR1 will not
operate.
Compressor CPR2 or CPR3 will
not operate.
Compressor CPR1 will not
operate.
Compressor CPR2 or CPR3 will
not operate.
Compressor CPR1 will not
operate.
Compressor CPR2 or CPR3 will
not operate.
Compressor CPR1 will not
operate.
Compressor CPR2 or CPR3 will
not operate.
NORMAL RANGE
4 to 20 mA
10 to 90% RH Honeywell
C7600A.
Potentiometer range 50 to 200
Ohms.
100 to 900 Ohms Use ZSM Test
Procedures.
100 to 900 Ohms Use ZSM Test
Procedures.
Open 230 F +/- 6.5 F
Close 180 F +/- 12.5 F
Normally closed
100 to 900 Ohms approx. Use
ZSM Test Procedures.
-40 TO 150 F
346K to 2.1K
Normally Closed
Open 135 F
Reset 105 F.
Open 25 PSIG
Close 41 PSIG.
Open 25 PSIG
Close 41 PSIG.
Normally Closed
range varies by unit.
Normally Closed
range varies by unit
Open 650 psig
Close 550 psig
Open 650 psig
Close 550 psig
Normally Closed
Normally Closed
Varies by unit
Varies by unit
DIAGNOSTIC
Check at ECA ECA 3 flashes.
RAH-1 and RAH-2 by
measuring current draw.
*NONE* Check resistance at
ECA P and P1 50 to 200 Ohms.
*NONE* Check at terminals 2
and 3 on ZSM
*NONE* Check at terminals 2
and 5 on ZSM.
Cool Failure Output at RTRM J6-
8 to J6-6 LED blinks at ZSM.
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,
CV Cool Failure Output at RTRM
J6-8 to J6-6 "COOL" LED Blinks
at ZSM
Heat Failure Output at RTRM
J6-7 to J6-6 "HEAT" LED Blinks
at ZSM.
Possible Cool Failure at RTRM
J1-8 to Ground, 0 VAC. "COOL"
LED Blinks at ZSM.
Possible Cool Failure at RTRM
J3-2 to Ground, 0 VAC. "COOL"
LED blinks at ZSM.
Cool Failure Output at RTRM J6-
8 to J6-6 "COOL" LED blinks at
ZSM.
Cool Failure Output at RTRM J6-
8 to J6-6 "COOL" LED blinks at
ZSM.
Cool Failure Outputat RTRM J6-
8 to J6-6 "COOL" LED blinks at
ZSM.
Cool Failure Output at RTRM J6-
8 to J6-6 "COOL" LED blinks at
ZSM.
Cool Failure Output at RTRM J6-
8 to J6-6 "COOL" LED blinks at
ZSM.
Cool Failure Output at RTRM J6-
8 to J6-6 "COOL" LED blinks at
ZSM.
Cool Failure Output at RTRM J6-
8 to J6-6 "COOL" LED blinks at
ZSM.
Cool Failure Output at RTRM J6-
8 to J6-6 "COOL" LED blinks at
ZSM.
RT-SVX34C-EN