70
System Troubleshooting Chart (Continued)
SYMPTOM
PROBABLE CAUSE
RECOMMENDED ACTION
G. ODM 3 and/or 4 will
1. OAS has failed.
1. Perform OAS Resistance/Temperature check. Replace if necessary.
not cycle.
2. ODM3 and/or 4 capacitor
2. Check ODM capacitor, replace if necessary.
has failed.
3. Wiring, terminal, or CC2
3. Check wires, terminals, and CC2. Repair or replace if necessary.
contactor failure.
4. ODM3 and/or 4 has failed.
4. Check ODM, replace if necessary.
5. RTRM is defective.
5. Replace RTRM module
6. ODF20 has failed.
6. Check for proper voltage and contact closure. ODF20 relay has a
24 VAC holding coil. If voltage is present, replace relay.
H. CPR2 and 3 (if
1. No power to CC2 and/or 3
1. Check wiring, terminals and applicable controls (CCB2, CCB3, HPC2,
applicable) will not
coil. Cool Failure Possible.
LPC2, WTL2, WTL3)
operate.
2. CC2 and/or 3 coil defective.
2. Verify integrity of CC2 and/or 3 coil windings. If open or shorted
Cool Failure Indicated.
replace CC2 and/or CC3.
3. CC2 and/or 3 contacts
3. If 24 VAC is present at CC2 and/or 3 coil, replace relay.
defective.
4. RTRM is defective.
4. 24 VAC is not present at CC2 and/or 3 coil. Reset the Cool Failure by
cycling the service disconnect. Place the unit into Cool Stage 2 Mode,
step 4 for constant Volume or step 6 for variable air volume, to insure
CPR2 and 3 Compressor operation. Check input devices in #1 & #2
above, if no controls have opened, and CC2 and/or 3 will not close,
replace RTRM.
I. Indoor motor (IDM)
1. IDM has failed.
1. Check IDM, replace if necessary.
will not operate
2. Wiring, terminal,
2. Check wiring, terminals and F contactor. Repair or replace wiring,
or contactor failure.
terminals, or fan contactor F.
3. ZSM is defective.
3. Place unit in test mode. If the fan operates in the test mode, test the
ZSM using the appropriate test procedures.
4. RTRM is defective.
4. Check the RTRM fan output. Locate P2-1
on the RTRM. Measure voltage to
ground. If 24 VAC is not present on a call for fan, replace the RTRM.
5. Supply Fan Proving (FFS)
5. Check FFS and belts, repair or replace if necessary.
switch has opened.
J. No Heat (YC’s only)
1. CFM has failed.
1. Check CFM, replace if necessary.
CFM will not run, IP
2. CFM capacitor
2. Disconnect BROWN wires from capacitor, test, and replace if
warms up, GV is
has failed.
necessary.
energized,
3. Wiring, or terminal
3. Check wiring, and terminals. Repair, or replace if necessary.
failure.
4. TNS3 and/or 4 has failed.
4. Check for 230 VAC at TNS3 and/or 4 secondary, between Y1 and
(460/575 V units only)
Y2. If 230 VAC is not present, replace TNS3 and/or 4.
K. No Heat
1. TNS3 and/or 4 has failed.
1. Check for 115 VAC at TNS3 and/or 4 secondary, between X1 and X2.
(YC’s only)
If 115 VAC is not present, replace TNS3 and/or 4.
CFM runs, GV
2. Wiring or terminal failure.
2. Check wiring and terminals. Repair or replace if necessary.
energizes,
3. IGN has failed.
3. Verify presence of 115 VAC at IGN L1 and L2. Check for 115 VAC
IP does not
between terminals PPM4-1 and PPM4-2, and PPM5-1 and PPM5-2
warm up.
(if applicable) in the gas section. If 115 VAC is present for IP warmup,
IGN is OK. If 115 VAC is not present, replace IGN.
4. IP has failed.
4. With 115 VAC applied to IP, warm up should take place. Cold
resistance of IP should be a minimum of 50 Ohms. Nominal current
should be 2.5 to 3.0 Amps.
Summary of Contents for Voyager RT-SVX17C-EN
Page 8: ...8 Figure 1 Unit Dimensions for TC_ TE_ and YC_330 360 and 420 MBH Units Low Heat ...
Page 9: ...9 Figure 1 continued Unit Dimensions for YC_330 360 and 420 MBH Units High Heat ...
Page 10: ...10 Figure 1 continued Unit Dimensions for TC_ TE_ and YC_480 and 600 MBH Units Low High Heat ...
Page 24: ...24 Figure 10 Typical FieldWiring Requirements for CV Control Options ...
Page 78: ......
Page 79: ......
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