Troubleshooting; Reliatel™ Controls; System Status Checkout Procedure; Method 1 - Trane Axiom GWS Series Installation, Operation And Maintenance Manual

Troubleshooting

W W A A R R N N I I N N G G
H H a a z z a a r r d d o o u u s s S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s ! !
F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w a a l l l l p p r r e e c c a a u u t t i i o o n n s s i i n n t t h h i i s s m m a a n n u u a a l l a a n n d d
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d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y . .
T T e e c c h h n n i i c c i i a a n n s s , , i i n n o o r r d d e e r r t t o o p p r r o o t t e e c c t t t t h h e e m m s s e e l l v v e e s s f f r r o o m m
p p o o t t e e n n t t i i a a l l e e l l e e c c t t r r i i c c a a l l , , m m e e c c h h a a n n i i c c a a l l , , a a n n d d c c h h e e m m i i c c a a l l
h h a a z z a a r r d d s s , , M M U U S S T T f f o o l l l l o o w w p p r r e e c c a a u u t t i i o o n n s s i i n n t t h h i i s s m m a a n n u u a a l l
a a n n d d o o n n t t h h e e t t a a g g s s , , s s t t i i c c k k e e r r s s , , a a n n d d l l a a b b e e l l s s , , a a s s w w e e l l l l a a s s t t h h e e
f f o o l l l l o o w w i i n n g g i i n n s s t t r r u u c c t t i i o o n n s s : : U U n n l l e e s s s s s s p p e e c c i i f f i i e e d d o o t t h h e e r r w w i i s s e e , ,
d d i i s s c c o o n n n n e e c c t t a a l l l l e e l l e e c c t t r r i i c c a a l l p p o o w w e e r r i i n n c c l l u u d d i i n n g g r r e e m m o o t t e e
d d i i s s c c o o n n n n e e c c t t a a n n d d d d i i s s c c h h a a r r g g e e a a l l l l e e n n e e r r g g y y s s t t o o r r i i n n g g
d d e e v v i i c c e e s s s s u u c c h h a a s s c c a a p p a a c c i i t t o o r r s s b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g . .
F F o o l l l l o o w w p p r r o o p p e e r r l l o o c c k k o o u u t t / / t t a a g g o o u u t t p p r r o o c c e e d d u u r r e e s s t t o o
e e n n s s u u r r e e t t h h e e p p o o w w e e r r c c a a n n n n o o t t b b e e i i n n a a d d v v e e r r t t e e n n t t l l y y
e e n n e e r r g g i i z z e e d d . . W W h h e e n n n n e e c c e e s s s s a a r r y y t t o o w w o o r r k k w w i i t t h h l l i i v v e e
e e l l e e c c t t r r i i c c a a l l c c o o m m p p o o n n e e n n t t s s , , h h a a v v e e a a q q u u a a l l i i f f i i e e d d l l i i c c e e n n s s e e d d
e e l l e e c c t t r r i i c c i i a a n n o o r r o o t t h h e e r r i i n n d d i i v v i i d d u u a a l l w w h h o o h h a a s s b b e e e e n n
t t r r a a i i n n e e d d i i n n h h a a n n d d l l i i n n g g l l i i v v e e e e l l e e c c t t r r i i c c a a l l c c o o m m p p o o n n e e n n t t s s
p p e e r r f f o o r r m m t t h h e e s s e e t t a a s s k k s s . .
ReliaTel™ ™ Controls
The RTRM has the ability to provide the service
personnel with some unit diagnostics and system
status information.
Before turning the main power disconnect switch
"Off", follow the steps below to check the ReliaTel™
Refrigeration Module (RTRM). All diagnostics & system
status information stored in the RTRM will be lost when
the main power is turned "Off".
To prevent injury or death from electrocution, it is the
responsibility of the technician to recognize this hazard
and use extreme care when performing service
procedures with the electrical power energized.
1. Verify that the Liteport LED on the RTRM is burning
continuously. If the LED is lit, go to Step 3.
2. If the LED is not lit, verify that 24 VAC is presence
between J1-1 and J1-2. If 24 Vac is present, proceed
to Step 3. If 24 Vac is not present, check the unit
main power supply, check transformer (TNS1).
Proceed to Step 3 if necessary.
3. Utilizing "Method 1" or "Method 2" in the "System
Status Checkout Procedure " section, check the
following:
System status
Heating status
Cooling status
If a System failure is indicated, proceed to Step 4. If
no failures are indicated, proceed to Step 5.
4. If a System failure is indicated, recheck Steps 1 and
2. If the LED is not lit in Step 1, and 24 VAC is
WSHP-SVX015C-EN
present in Step 2, the RTRM has failed. Replace the
RTRM.
5. If no failures are indicated, use one of the TEST
mode procedures described in the "Unit Start-Up"
section to start the unit. This procedure will allow
you to check all of the RTRM outputs, and all of the
external controls (relays, contactors, etc.) that the
RTRM outputs energize, for each respective mode.
Proceed to Step 6.
6. Step the system through all of the available modes,
and verify operation of all outputs, controls, and
modes. If a problem in operation is noted in any
mode, you may leave the system in that mode for
up to one hour while troubleshooting. Refer to the
sequence of operations for each mode, to assist in
verifying proper operation. Make the necessary
repairs and proceed to Steps 7 and 8.
7. If no abnormal operating conditions appear in the
test mode, exit the test mode by turning the power
"Off" at the main power disconnect switch.
8. Refer to the individual component test procedures if
other microelectronic components are suspect.
System Status Checkout
Procedure
"System Status" is checked by using one of the
following two methods:

Method 1

If the Zone Sensor Module (ZSM) is equipped with a
remote panel with LED status indication, you can check
the unit within the space. If the ZSM does not have
LED's, use Method 2. BAYSENS110*, and
BAYSENS119* all have the remote panel indication
feature. The LED descriptions are listed below.
LED 1 (System)
"On" during normal operation.
"Off" if a system failure occurs or the LED fails.
"Flashing" indicates test mode.
LED 2 (Heat)
"On" when the heat cycle is operating.
"Off" when the heat cycle terminates or the LED fails.
"Flashing" indicates a heating failure.
LED 3 (Cool)
"On" when the cooling cycle is operating.
"Off" when the cooling cycle terminates or the LED
fails.
"Flashing" indicates a cooling failure.
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