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Troubleshooting
Troubleshooting
The WSHP Open controller acts as an intelligent embedded thermostat to the water source heat pump, but can be
monitored and controlled from a third party network.
The 3 distinct components for troubleshooting are:
•
The WSHP Open controller
•
The mechanical systems of the WSHP unit
•
The third party connected network
First, you must determine which component needs troubleshooting.
The WSHP Open controller can troubleshoot itself with Service Test, communicating LED's, and built-in alarms,
which are discussed in the unit's Controls and Troubleshooting instructions. Disconnecting the WSHP Open from
the unit control inputs can be valuable in determining whether the problem is related to the unit/equipment, the
controller/equipment, or the controller/network. When disconnected from the unit control inputs, you can use
simple 24V signals to activate G, Y1, Y2, W1, W2, etc. to verify proper unit operation. If the problem occurs without
the WSHP Open connected, then you should begin troubleshooting the unit/equipment rather than the WSHP
Open or network.
LED's
The LED's indicate if the controller is speaking to the other devices on the network. The LED's should reflect
communication traffic based on the baud rate set. The higher the baud rate, the more solid the LED's will appear.
The LED's on the WSHP Open show the status of certain functions.
If this LED is on...
Power
Rx
Tx
BO#
NOTE If Tx is not lit, the MS/TP token is not being passed between controllers.
The Run and Error LED's indicate controller and network status.
If Run LED shows...
2 flashes per second
2 flashes per second
2 flashes per second
2 flashes per second
2 flashes per second
5 flashes per second
7 flashes per second
22
Status is...
The WSHP Open has power
The WSHP Open is receiving data from the network segment
The WSHP Open is transmitting data over the network segment
The binary output is active
And Error LED shows...
Off
2 flashes,
Run
alternating with
LED
3 flashes, then off
On
On
Off
7 flashes per second, alternating with
Run
LED
Status is..
Normal
Five minute auto-restart delay after
system error
Controller has just been formatted
Two or more devices on this network
have the same network address
Firmware halted after frequent system
errors or control programs halted
Firmware transfer in progress, Boot is
running
Ten second recovery period after
brownout
WSHP Open v3
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