91
WARNING
!
COOLING TROUBLE SHOOTING CHART
DISCONNECT ALL POWER TO UNIT BEFORE SERVICING. CONTACTOR MAY BREAK ONLY ONE SIDE. FAILURE
TO SHUT OFF POWER CAN CAUSE ELECTRICAL SHOCK RESULTING IN PERSONAL INJURY OR DEATH.
SYMPTOM
POSSIBLE CAUSE
REMEDY
Unit will not run
• Power off or loose electric
a
l connection
•
Check for correct volt
a
ge
a
t compressor cont
a
ctor in control
box
• Thermost
a
t out of c
a
libr
a
tion-set too high
•
Reset
• F
a
iled cont
a
ctor
•
Check for 24 volts
a
t cont
a
ctor coil - repl
a
ce if cont
a
cts
a
re
open
• Blown fuses
•
Repl
a
ce fuses
• Tr
a
nsformer defective
•
Check wiring-repl
a
ce tr
a
nsformer
• High pressure control open (if provided)
•
Reset-
a
lso see high he
a
d pressure remedy-The high pressure
control opens
a
t 610 P
S
IG
• Interconnecting low volt
a
ge wiring d
a
m
a
ged
•
Repl
a
ce thermost
a
t wiring
Condenser f
a
n runs, compressor
• Run or st
a
rt c
a
p
a
citor f
a
iled (single ph
a
se only)
•
Repl
a
ce
doesn’t
•
S
t
a
rt rel
a
y defective 9single ph
a
se only)
•
Repl
a
ce
• Loose connection
•
Check for correct volt
a
ge
a
t compressor -
check & tighten
a
ll connections
• Compressor stuck, grounded or open motor winding
•
W
a
it
a
t le
a
st 2 hours for overlo
a
d to reset.
open intern
a
l overlo
a
d.
If still open, repl
a
ce the compressor.
• Low volt
a
ge condition
At compressor termin
a
ls, volt
a
ge must be within 10% of r
a
ting
pl
a
te volts when unit is oper
a
ting.
• Low volt
a
ge condition
•
Add st
a
rt kit components
Insufficient cooling
• Improperly sized unit
•
Rec
a
lcul
a
te lo
a
d
• Improper
a
irflow
•
Check - should be
a
pproxim
a
tely 400 CFM per ton.
• Incorrect refriger
a
nt ch
a
rge
•
Ch
a
rge per procedure
a
tt
a
ched to unit service p
a
nel.
• Air, non-condensibles or moisture in system
•
Recover refriger
a
nt, ev
a
cu
a
te & rech
a
rge,
a
dd filter drier
• Incorrect volt
a
ge
•
At compressor termin
a
ls, volt
a
ge must be within 10% of r
a
ting
pl
a
te volts when unit is oper
a
ting.
Compressor short cycles
• Incorrect volt
a
ge
•
At compressor termin
a
ls, volt
a
ge must be ± 10% of
n
a
mepl
a
te m
a
rking when unit is oper
a
ting.
• Defective overlo
a
d protector
•
Repl
a
ce - check for correct volt
a
ge
• Refriger
a
nt underch
a
rge
•
Add refriger
a
nt
Registers swe
a
t
• Low ev
a
por
a
tor
a
irflow
•
Incre
a
se speed of blower or reduce restriction - repl
a
ce
a
ir
filter
High he
a
d-low v
a
por pressures
• Restriction in liquid line, exp
a
nsion device or filter drier
•
Remove or repl
a
ce defective component
• Flow check piston size too sm
a
ll
•
Ch
a
nge to correct size piston
• Incorrect c
a
pill
a
ry tubes
•
Ch
a
nge coil
a
ssembly
• TXV does not open
•
Repl
a
ce TXV
High he
a
d-high or norm
a
l v
a
por
• Dirty condenser coil
•
Cle
a
n coil
pressure - Cooling mode
• Refriger
a
nt overch
a
rge
•
Correct system ch
a
rge
• Condenser f
a
n not running
•
Rep
a
ir or repl
a
ce
• Air or non-condensibles in system
•
Recover refriger
a
nt, ev
a
cu
a
te & rech
a
rge
Low he
a
d-high v
a
por pressures
• Defective Compressor v
a
lves
•
Repl
a
ce compressor
• Incorrect c
a
pill
a
ry tubes
•
Repl
a
ce coil
a
ssembly
Low v
a
por - cool compressor -
• Low ev
a
por
a
tor
a
irflow
•
Incre
a
se speed of blower or reduce restriction - repl
a
ce
a
ir
iced ev
a
por
a
tor coil
filter
• Oper
a
ting below 65°F outdoors
•
Add Low Ambient Kit
• Moisture in system
•
Recover refriger
a
nt - ev
a
cu
a
te & rech
a
rge -
a
dd filter drier
High v
a
por pressure
• Excessive lo
a
d
•
Recheck lo
a
d c
a
lcul
a
tion
• Defective compressor
•
Repl
a
ce
Fluctu
a
ting he
a
d & v
a
por
• TXV hunting
•
Check TXV bulb cl
a
mp - check
a
ir distribution on coil - repl
a
ce
pressures
TXV
• Air or non-condensibles in system
•
Recover refriger
a
nt, ev
a
cu
a
te & rech
a
rge
Gurgle or pulsing noise
a
t
• Air or non-condensibles in system
•
Recover refriger
a
nt, ev
a
cu
a
te & rech
a
rge
exp
a
nsion device or liquid line
Circul
a
ting
a
ir blower & inducer
• M
a
nu
a
l reset overtemper
a
ture control
•
Reset or repl
a
ce
run continuously,
• tripped
compressor will not st
a
rt
• Wire loose in limit circuit
•
Check wiring
Содержание RKNL 13 SEER (3-5 TONS) SERIES
Страница 6: ...6 FIGURE 3 CABINET DIMENSIONS AND ACCESS LOCATIONS FIGURE 4 SUPPLY AND RETURN DIMENSIONS I282 I288 ...
Страница 25: ...25 FIGURE 20 FIGURE 21 INTEGRATED FURNACE CONTROL SPEED TAP BLOCK FIGURE 22 ...
Страница 26: ...26 FIGURE 22 Continued ...
Страница 79: ...79 FIGURE 23 WIRING DIAGRAM ...
Страница 80: ...80 FIGURE 24 WIRING DIAGRAM ...
Страница 81: ...81 FIGURE 25 WIRING DIAGRAM ...
Страница 82: ...82 FIGURE 26 WIRING DIAGRAM ...
Страница 83: ...83 FIGURE 27 WIRING DIAGRAM ...
Страница 84: ...84 FIGURE 28 WIRING DIAGRAM ...
Страница 85: ...85 FIGURE 29 WIRING DIAGRAM ...
Страница 87: ...87 FIGURE 31 SYSTEM CHARGE CHARTS 3 5 TON COOLING 13 14 SEER ...
Страница 88: ...88 FIGURE 32 SYSTEM CHARGE CHARTS 4 TON COOLING 13 14 SEER ...
Страница 89: ...89 FIGURE 33 SYSTEM CHARGE CHARTS 5 TON COOLING 13 SEER ...
Страница 94: ...94 ...
Страница 95: ...95 ...
Страница 96: ...96 CM 0606 ...
