Troubleshooting
Forgot password
If a user is ever locked out of A SUPRA-RS due to forgetting their PIN, there is a method to unlock it but should only be used as a last resort. When prompted, they can enter “Up arrow”, “Plus button”, “Down arrow”, “Minus button” as their password. ...
Curtains moving too fast, how do I slow them?
If the curtain machine has a gear down ratio option, this may be the best way to slow the curtain’s movement. From the control side, there are some options to make the open/close durations shorter, such as lowering the “OPEN ON”, or “CLOSE ON” ...
1640 (SUPRA-RS) Display damaged. What part do I need?
KSUPRA-DISPLAY would be used.
I have a faulty relay, can it be fixed or does it need to be replaced?
It's rare that a relay may become "stuck" and is recoverable by tapping on the relay to shake it loose. Most likely it's seized and needs to be replaced. Even in the event that it is recoverable, it may not be trust worthy after getting stuck once. ...
Alarm relay not operating alarm system
Problem Alarm relay not operating alarm system Possible Cause Incorrect wiring Possible Solution Correct the wiring.
Staged heater cycles on and off
Problem Staged heater cycles on and off Possible Cause Possible Solution The heater set points are too close together with variable speed fans. Adjust the hysteresis setting. Move the temperature probe closer to the heater. Widen the set points. The ...
Curtain opens when it should close or closes when it should open
Problem Curtain opens when it should close or closes when it should open Possible Cause Incorrect wiring, the close and open wires are reversed. Possible Solution Correct the wiring.
Variable speed 1 or variable speed 2 fan switches on, runs at full speed, and then turns off. Keeps cycling.
Problem Variable speed 1 or variable speed 2 fan switches on, runs at full speed, and then turns off. Keeps cycling. Possible Cause The hysteresis is not high enough. The outside temperature is rising and falling quickly. This happens most often in ...
Variable fan runs at maximum
Problem Variable fan runs at maximum Possible Cause Possible Solution Incorrect wiring Correct the wiring. The fuse is open or blown. Check why the fuse was blown and repair any problems. Replace the fuse. The variable stage is configured as OFF ...
Display showing unusually high or low temperature
Problem Display showing unusually high or low temperature Possible Cause Possible Solution If you have more than one probe connected, press buttons 1 to 4 to determine which probe is causing the high or low reading. The probe is not a Phason probe. ...
Forgotten PIN
Problem Forgotten PIN Possible Solution Have a user with “Admin” access assign a new password.
Date/time not correct
Problem Date/time not correct Possible Cause Daylight savings Possible Solution Adjust the date/time.
Staged heater cycles on and off
Problem Staged heater cycles on and off Possible Cause Possible Solution Heater set points are too close together with variable speed fans. Adjust the hysteresis setting. Move the temperature probe closer to the heater. Widen the set points. Heater ...
Display showing unusually high temperature
Problem Display showing unusually high temperature Possible Cause Possible Solution Extension cable connected to temperature probe is providing a poor connection Check the extension cable connection. Resolder it if necessary. Damaged probe Replace ...
Fans turn off and actuators close when zone temperature rises
Problem Fans turn off and actuators close when zone temperature rises Possible Cause Tunnel mode is active Possible Solution Set tunnel turn off to "No" for stages you do not want affected by tunnel mode.
Variable fan or variable heat element not running
Problem Variable fan or variable heat element not running Possible Cause Possible Solution Incorrect wiring Correct the wiring. Fuse open or blown Check why the fuse was blown and repair any problems. Replace the fuse. Minimum Idle setting too low ...
Variable fan or variable heat element runs at maximum.
Problem Variable fan or variable heat element runs at maximum. Possible Cause Possible Solution Incorrect wiring Correct the wiring. Minimum idle speed too high Decrease the mimimum idle speed setting. Variable speed range matches temperature set ...
Relay not operating load
Problem Relay not operating load Possible Cause Possible Solution Incorrect wiring Correct the wiring. Switch-on setting for stage incorrect Adjust the setting. Relay set to cool for a heater Relay set to heat for a fan No power to load Switch on the ...
No power and/or display
Problem No power and/or display Possible Cause Possible Solution A circuit breaker at service panel is off or tripped. Reset the circuit breaker. Incorrect wiring Correct the wiring. Display board inter-connect cable is not plugged into the power ...
Motors and fans slow down or stop
Problem Motors and fans slow down or stop Possible Cause Power surge, brownout, or power outage Possible solution You cannot do anything when it happens, but could avoid problem in future by providing proper voltage and/or protection to the unit.
Burn marks on boards and components
Problem Burn marks on boards and components Possible Cause Power surge, brownout, or power outage Possible solution You cannot do anything when it happens, but could avoid problem in future by providing proper voltage and/or protection to the unit.
Power supply Components blown out
Problem Power supply components blown out Possible Cause Power surge, brownout, or power outage Possible solution You cannot do anything when it happens, but could avoid problem in future by providing proper voltage and/or protection to the unit.
Display is difficult to read
Problem Display is difficult to read Possible cause Contrast needs adjusting Possible solution Adjust the contrast. Refer to contrast adjuster (#20)
Alarm Codes and Error Messages
ALARM MESSAGE POSSIBLE CAUSE POSSIBLE SOLUTION High Temp Probe 1 High Temp Probe 2 High Temp Probe 3 High Temp Probe 4 The temperature associated with a probe has gone above the high temperature alarm point and past any alarm biasing. Try lowering ...
Variable fans at full speed all the time
A common issue users have with equipment "not functioning" as expected within the SUPRA is due to someone leaving said equipment in manual override. Due to the state of the equipment being saved when you leave the manual override menu, this means ...