Cxm Controls - Heat Controller HP Series Installation, Operation & Maintenance Manual

Heat Controller, Inc.
CXM Control
For detailed control information, see CXM Electronic Heat
Pump Control Application, Operation and Maintenance
Guide.
Field Selectable Inputs
Test mode: Test mode allows the service technician to
check the operation of the control in a timely manner. By
momentarily shorting the test terminals, the CXM control
enters a 20 minute test mode period in which all time
delays are sped up 15 times. Upon entering test mode,
the status LED will flash a code representing the last fault.
For diagnostic ease at the thermostat, the alarm relay will
also cycle during test mode. The alarm relay will cycle
on and off similar to the status LED to indicate a code
representing the last fault, at the thermostat. Test mode
can be exited by shorting the test terminals for 3 seconds.
Retry Mode: If the control is attempting a retry of a fault,
the status LED will slow flash (slow flash = one flash
every 2 seconds) to indicate the control is in the process
of retrying.
Field Configuration Options
Note: In the following field configuration options, jumper
wires should be clipped ONLY when power is removed
from the CXM control.
Water coil low temperature limit setting: Jumper 3 (JW3-
FP1 Low Temp) provides field selection of temperature
limit setting for FP1 of 30°F or 10°F [-1°F or -12°C]
(refrigerant temperature).
Not Clipped = 30°F [-1°C]. Clipped = 10°F [-12°C].
Air coil low temperature limit setting: Jumper 2 (JW2-FP2
Low Temp) provides field selection of temperature limit
setting for FP2 of 30°F or 10°F [-1°F or -12°C] (refrigerant
temperature). Note: This jumper should only be clipped
under extenuating circumstances, as recommended by
technical services.
Not Clipped = 30°F [-1°C]. Clipped = 10°F [-12°C].
Alarm relay setting: Jumper 1 (JW1-AL2 Dry) provides
field selection of the alarm relay terminal AL2 to be
jumpered to 24VAC or to be a dry contact (no connection).
Not Clipped = AL2 connected to R. Clipped = AL2 dry
contact (no connection).
DIP Switches
Note: In the following field configuration options, DIP
switches should only be changed when power is removed
from the CXM control.
DIP switch 1: Unit Performance Sentinel Disable -
provides field selection to disable the UPS feature.
On = Enabled. Off = Disabled.
DIP switch 2: Stage 2 Selection - provides selection of
whether compressor has an "on" delay. If set to stage
2, the compressor will have a 3 second delay before
energizing. Also, if set for stage 2, the alarm relay will
NOT cycle during test mode.
On = Stage 1. Off = Stage 2
HP SerieS

CXM CONTROLS

DIP switch 3: Not Used.
DIP switch 4: DDC Output at EH2 - provides selection for
DDC operation. If set to "DDC Output at EH2," the EH2
terminal will continuously output the last fault code of
the controller. If set to "EH2 normal," EH2 will operate as
standard electric heat output.
On = EH2 Normal. Off = DDC Output at EH2.
DIP switch 5: Factory Setting - Normal position is "On."
Do not change selection unless instructed to do so by
the factory.
Table 6a: CXM LED And Alarm
Relay Operations
Description of Operation
Normal Mode
Normal Mode with UPS Warning
CXM is non-functional
Fault Retry
Lockout
Over/Under Voltage Shutdown
Test Mode - No fault in memory
Test Mode - HP Fault in memory Flashing Code 2
Test Mode - LP Fault in memory
Test Mode - FP1 Fault in memory Flashing Code 4
Test Mode - FP2 Fault in memory Flashing Code 5
Test Mode - CO Fault in memory Flashing Code 6
Test Mode - Over/Under
shutdown in memory
Test Mode - UPS in memory
Test Mode - Swapped Thermistor Flashing Code 9
-Slow Flash = 1 flash every 2 seconds
-Fast Flash = 2 flashes every 1 second
-Flash code 2 = 2 quick flashes, 10 second pause, 2 quick
flashes, 10 second pause, etc.
-On pulse 1/3 second; off pulse 1/3 second
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Installation, Operation & Maintenance
LED Alarm Relay
On Open
On Cycle (closed 5 sec., Open 25 sec.)
Off Open
Slow Flash Open
Fast Flash Closed
Slow Flash Open (Closed after 15 minutes)
Flashing Code 1 Cycling Code 1
Cycling Code 2
Flashing Code 3 Cycling Code 3
Cycling Code 4
Cycling Code 5
Cycling Code 6
Flashing Code 7 Cycling Code 7
Flashing Code 8 Cycling Code 8
Cycling Code 9
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