Instruction manual
34
Enable will immediately turn on. If there is a Fan 2 demand,
the Fan Enable and Fan Speed will immediately turn on.
NOTE: DIP switch 5 on S1 does not have an effect upon Fan 1
and Fan 2 outputs.
HEATING STAGE 1 — In Heating Stage 1 mode, the Fan
Enable and Compressor relays are turned on immediately.
Once the demand is removed, the relays are turned off and the
control reverts to Standby mode. If there is a master/slave or
dual compressor application, all compressor relays and related
functions will operate per their associated DIP switch 2 setting
on S1.
HEATING STAGE 2 — In Heating Stage 2 mode, the Fan
Enable and Compressor relays are remain on. The Fan Speed
relay is turned on immediately and turned off immediately
once the demand is removed. The control reverts to Heating
Stage 1 mode. If there is a master/slave or dual compressor
application, all compressor relays and related functions will op-
erate per their associated DIP switch 2 setting on S1.
HEATING STAGE 3 — In Heating Stage 3 mode, the Fan
Enable, Fan Speed and Compressor relays remain on. The EH1
output is turned on immediately. With continuing Heat Stage 3
demand, EH2 will turn on after 10 minutes. EH1 and EH2 are
turned off immediately when the Heating Stage 3 demand is re-
moved. The control reverts to Heating Stage 2 mode.
Output EH2 will be off if FP1 is greater than 45 F AND
FP2 (when shorted) is greater than 110 F during Heating
Stage 3 mode. This condition will have a 30-second recogni-
tion time. Also, during Heating Stage 3 mode, EH1, EH2, Fan
Enable, and Fan Speed will be ON if G input is not active.
EMERGENCY HEAT — In Emergency Heat mode, the Fan
Enable and Fan Speed relays are turned on. The EH1 output is
turned on immediately. With continuing Emergency Heat de-
mand, EH2 will turn on after 5 minutes. Fan Enable and Fan
Speed relays are turned off after a 60-second delay. The control
reverts to Standby mode.
Output EH1, EH2, Fan Enable, and Fan Speed will be ON if
the G input is not active during Emergency Heat mode.
COOLING STAGE 1 — In Cooling Stage 1 mode, the Fan
Enable, compressor and RV relays are turned on immediately.
If configured as stage 2 (DIP switch set to OFF) then the com-
pressor and fan will not turn on until there is a stage 2 demand.
The fan Enable and compressor relays are turned off immedi-
ately when the Cooling Stage 1 demand is removed. The con-
trol reverts to Standby mode. The RV relay remains on until
there is a heating demand. If there is a master/slave or dual
compressor application, all compressor relays and related func-
tions will track with their associated DIP switch 2 on S1.
COOLING STAGE 2 — In Cooling Stage 2 mode, the Fan
Enable, compressor and RV relays remain on. The Fan Speed
relay is turned on immediately and turned off immediately
once the Cooling Stage 2 demand is removed. The control re-
verts to Cooling Stage 1 mode. If there is a master/slave or dual
compressor application, all compressor relays and related func-
tions will track with their associated DIP switch 2 on S1.
NIGHT LOW LIMIT (NLL) STAGED HEATING — In NLL
staged Heating mode, the override (OVR) input becomes ac-
tive and is recognized as a call for heating and the control will
immediately go into a Heating Stage 1 mode. With an addition-
al 30 minutes of NLL demand, the control will go into Heating
Stage 2 mode. With another additional 30 minutes of NLL
demand, the control will go into Heating Stage 3 mode.
SYSTEM TEST
System testing provides the ability to check the control
operation. The control enters a 20-minute Test mode by mo-
mentarily shorting the test pins. All time delays are increased
15 times. See Fig. 19.
Test Mode —
To enter Test mode on C or D controls, cycle
the power 3 times within 60 seconds. The LED (light-emitting di-
ode) will flash a code representing the last fault when entering the
Test mode. The alarm relay will also power on and off during Test
mode. See Tables 22 and 23. To exit Test mode, short the termi-
nals for 3 seconds or cycle the power 3 times within 60 seconds.
NOTE: Deluxe D Control has a flashing code and alarm relay
cycling code that will both have the same numerical label.
For example, flashing code 1 will have an alarm relay cycling
code 1. Code 1 indicates the control has not faulted since the
last power off to power on sequence.
Table 22 — C Control Current LED Status
and Alarm Relay Operations
LEGEND
NOTES:
1. Slow flash is 1 flash every 2 seconds.
2. Fast flash is 2 flashes every 1 second.
3. EXAMPLE: “Flashing Code 2” is represented by 2 fast flashes followed by
a 10-second pause. This sequence will repeat continually until the fault is
cleared.
Table 23 — C Control LED Code and
Fault Descriptions
LEGEND
LED STATUS DESCRIPTION OF OPERATION ALARM RELAY
On
Normal Mode Open
Normal Mode with
PM Warning
Cycle
(closed 5 sec.,
Open 25 sec.)
Off C Control is non-functional Open
Slow Flash Fault Retry Open
Fast Flash Lockout Closed
Slow Flash Over/Under Voltage Shutdown
Open
(Closed after
15 minutes)
Flashing Code 1 Test Mode — No fault in memory Cycling Code 1
Flashing Code 2 Te s t M o d e — HP Fault in memory Cycling Code 2
Flashing Code 3 Test Mode — LP Fault in memory Cycling Code 3
Flashing Code 4 Test Mode — FP1 Fault in memory Cycling Code 4
Flashing Code 5 Test Mode — FP2 Fault in memory Cycling Code 5
Flashing Code 6 Test Mode — CO Fault in memory Cycling Code 6
Flashing Code 7
Te s t M o d e — Over/Under
shutdown in memory
Cycling Code 7
Flashing Code 8 Test Mode — PM in memory Cycling Code 8
Flashing Code 9
Test Mode — FP1/FP2
Swapped Fault in memory
Cycling Code 9
CO — Condensate Overflow
FP — Freeze Protection
HP — High Pressure
LED — Light-Emitting Diode
LP — Low Pressure
PM — Performance Monitor
LED
CODE
FAULT DESCRIPTION
1 No fault in memory There has been no fault since
the last power-down to power-up
sequence
2 High-Pressure Switch HP Open Instantly
3 Low-Pressure Switch LP open for 30 continuous sec-
onds before or during a call
(bypassed for first 60 seconds)
4 Freeze Protection Coax
— FP1
FP1 below Temp limit for 30 con-
tinuous seconds (bypassed for
first 60 seconds of operation)
5 Freeze Protection Air Coil
— FP2
FP2 below Temp limit for 30 con-
tinuous seconds (bypassed for
first 60 seconds of operation)
6 Condensate overflow Sense overflow (grounded) for
30 continuous seconds
7
(Autoreset)
Over/Under Voltage
Shutdown
"R" power supply is <19VAC or
>30VAC
8 PM Warning Performance Monitor Warning
has occurred.
9 FP1 and FP2 Thermistors
are swapped
FP1 temperature is higher than
FP2 in heating/test mode, or FP2
temperature is higher than FP1
in cooling/test mode.
CO — Condensate Overflow
FP — Freeze Protection
HP — High Pressure
LED — Light-Emitting Diode
LP — Low Pressure
PM — Performance Monitor