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22
23
PROBLEM
PROBABLE CAUSE
SOLUTION
DEHUMIDIST
A
T
SET
T
OO HIGH
SET
DEHUMIDIST
A
T
T
O
A
LOWER SETTING.
HR
V
UNDERSIZED
T
O HANDLE HOT
TUB,
INDOOR POOLS, ETC.
COVER POOLS, HOT
TUBS ETC.
WHEN NOT
IN USE.
LIFESTYLES OF OCCUP
ANTS
A
VOID HANGING CLOTHES
T
O DR
Y
INSIDE,
A
VOID ST
ORING
WOOD INSIDE
AND
VENT
DR
YERS OUTSIDE.
HR
V
AND/OR DUCTS FROSTING UP
HR
V
AIR FLOWS IMPROPERL
Y
BALANCED
BALANCE HR
V
NOTE: FROST
BUILD UP
IS EXPECTED ON CORES PRIOR
T
O INITIA
TING
A
DEFROST
CYCLE.
SUPPL
Y
AIR FEELS COOL
HR
V
AIR FLOWS IMPROPERL
Y
BALANCED.
BALANCE HR
V
.
POOR LOCA
TION OF SUPPL
Y
GRILLS.
LOCA
TE GRILLS HIGH ON
W
ALLS OR UNDER BASEBOARDS.
OUTDOOR
TEMPERA
TURE
EXTREMEL
Y
COLD.
IF SUPPL
Y
AIR IS INST
ALLED INT
O RETURN
AIR OF FURNACE,
FURNACE F
AN NEEDS
T
O RUN CONST
ANTL
Y
T
O DISTRIBUTE
VENTILA
TION
AIR COMFOR
TABL
Y
.
ENSURE
THA
T
A
BREA
THER “T” IS INST
ALLED IN SUPPL
Y
DUCT
.
PREHEA
TER MA
Y
BE REQUIRED.
W
A
TER IN BOTT
OM OF HR
V
DRAIN P
AN (S) PLUGGED
ENSURE “O” RINGS ON DRAIN SPIGOT
SEA
TS PROPERL
Y
LOOK FOR KINKS IN LINE.
DRAIN LINES OBSTRUCTED
CHECK
W
A
TER DRAIN CONNECTIONS.
MAKE SURE
W
A
TER DRAINS PROPERL
Y
FROM
THE P
AN(S)
HR
V
HEA
T
EXCHANGE CORE NOT
INST
ALLED PROPERL
Y
CHECK ORIENT
A
TION LABEL
ON FRONT
OF CORE
AND POSITION
CORE CORRECTL
Y
.
HR
V
MA
Y
NOT
BE LEVEL
AIR FLOWS
ARE POOR
HR
V
AIR FLOW
IMPROPERL
Y
BALANCED
BALANCE HR
V
.
FIL
TER/CORE PLUGGED UP
CLEAN
AND REINST
ALL
1/4” MESH ON OUTSIDE HOODS PLUGGED
REMOVE OBSTRUCTIONS IN DUCT(S), HOODS
AND GRILLS.
IMPROPERL
Y
SIZED DUCTING