Specifications

Manual 2100-317
Page 10
THERMOSTAT INDICATOR LAMPS
STANDARD INDICATOR LAMPS
The lamp marked “EM” or “EMER.” comes on and stays
on whenever the system switch is placed in the
emergency heat position.
The lamp marked “CHECK” or “MALF.” will flash if
the high pressure switch opens and locks out compressor
operation. The “CHECK” or “MALF.” lamp will come
on and stay on if the low pressure switch closes and
locks out compressor operation. To reset either the high
or low pressure switch, place the thermostat in the off
position then back to the on position.
OPTIONAL INDICATOR LAMPS
The lamp marked “PUMP” comes on and stays on
anytime the compressor is on.
The lamp marked “AUX” comes on and stays on anytime
electric heaters are on.
EMERGENCY HEAT POSITION
The operator of the equipment must manually place the
system switch in this position. This is done when there is
a known problem with the unit, or when the “CHECK” or
“MALF.” lamp comes on indicating a problem.
BLOWER CONTROL SETUP
Due to the unique functions that the ECM blower motor
is able to perform each installation requires that the
jumpers on the blower control board be checked and
possibly moved based on the final installation. (See
Figure 5.) Check
Table 7 to verify the ADJUST, HEAT, COOL, and
DELAY taps are set in the proper location for the
installation.
HUMIDITY CONTROL
With the use of optional humidistat 8403-038 cut jumper
on blower control board marked “cut to enable” (refer to
U on Figure 5) to allow the humidistat to reduce the
blower airflow in the dehumidify mode. By reducing the
airflow the air coil runs colder and thus extracts more
moisture. This can increase latent capacity from 5 to
13% based on the R/H conditions of the structure being
conditioned. Refer to control circuit diagram for wiring
of humidistat.
CFM LIGHT
The light marked CFM on the blower control board (refer
to V on Figure 5) alternates between blinking 1 second
per approximately 100 CFM of air delivered by the
blower, and a solid light with 1 second off period
between modes.
TABLE 7
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%51wolfriasesaercninoitisopsihtnirepmuJ
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.noitacilppasihtnidesutoN
.2taeH
.A
.B
.C
.D
-
-
-
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Wk0deppihstinuhtiwnoitisopsihtnirepmuj
Wk5.4noitisopsihtnirepmujdellatsniegakcapretaeh
noitisopsihtnirepmujdellatsniegakcapretaehWk9
noitisopsihtnirepmujdellatsniegakcapretaehWk41
.3looC
.A
.B
.C
.D
-
-
-
-
noitisopsihtnirepmujhtiwdeppihstinU
dellatsniegakcapretaehynanehwnoitisopsihtnirepmuJ
noitacilppasihtnidesutoN
noitacilppasihtnidesutoN
.4yaleD
.A
.B
.C
.D
-
-
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noitisopsihtnirepmujhtiwdeppihstinuyaledoN
wolfria%65htiwnwodtuhsnoyaledrewolb.nim1
yaledBpatsulpwolfria%57htiwtratsnonurtrohs.nim2/12
yaledCdnaBpatsulpwolfria%83htiwtratsnonur-erp.nim1