We continue to learn how to best optimize the controller settings for both efficiency and ease of use. Below is the history of our software revision releases. Many of these changes came from feedback from our service contractors and we welcome additional suggestions. Don’t hesitate to Contact Us if you have any thoughts or fill out the suggestions box that you’ll see on many of our website pages.
- Added SU2 for 2nd supply temp sensor
- Supply fan “off” output reset as soon as prime power is reconnected
- Lag compressor turns on only when lead is not functioning in Generator Mode
- Added 180 seconds compressor delay after Generator Mode or controller reset
- Added compressor delay (3 min) whenever Generator Mode is restored to normal
- 2nd compressor can be turned on during Generator Mode through setting. Default set to No.
- Added A28 for Generator Mode.
- Added pLD display for A09 (Prime Power loss)
- F03 and F04 default changed to 10F
- Manual mode can now be accessed when units are on.
- Added 30s delay for A05.
- Minimum set point for u06 changed to 0.
- When appropriate parameters are changed on module 1, module 2 will also be affected through pLAN
- Pressure alarm now has 30 second delay after supply fan on, and every 10 seconds thereafter
- Supply fan overload delay changed to 0s
- Added in corresponding flashing lights for pLD for lockout condition
- Fixed brief heater operation whenever primary temp sensor is not attached/broken. rot changed to C menu. Temperature unit changed to -C-/-F-。
- Removed A10/A11 alarm triggering from repowering the unit.
- Added in temperature set point default reset.
- Added A29 and A30 (HVAC Airflow defective or DC part powered off) alarms (will only affect units with DC fan)
- Added A31 and A32 (AC Power Off) alarms (will only affect units with DC fan)
- Humidity limit default changed to 85%.
- Added adjustable comfort mode (1-9 hours), default 1 hour
- Added AC1/AC2/CFT menu
- FC difference default changed to 3.6F
- Removed default minimum fan speed.
- Coastal mode: FC only during emergency
- A31/32 cleared when power is restored
- Alarm will silence when triggering condition is no longer present
- Keep Sel button lit even if condition is no longer present
- Added 1 hour delay for audible alarm after Sel pressed
- Supply fan will now keep running for 30 seconds after heater stops
- Improved damper failure diagnostics
- Tighter Free Cooling (FC) supply air temperature control
- Corrected supply fan start and run counters to track only if signal input is > 3v
- Removed compressor delay due to Free Cooling if Free Cooling has been disabled (manually or automatically)
- Alarm History can now be accessed via remote monitoring
- Changed system default to automatically disable Free Cooling if Dirty Air Filter alarm (A15/16) is triggered
- Emergency Ventilation Mode now bypasses Dirty Air Filter alarms
- Changes to High Temperature (HT) parameter will now link to controller module 2
- Compressor will no longer start when indoor temperature falls below compressor turn on point during FC delay
- Bug Fix: alarm history can now be erased via remote interface
- Bug Fix: D5A parameter will no longer be skipped when viewing C menu parameters
- Bug Fix: Alarm history sequencing corrected. Alarms 100-200 will now properly display
- 2nd compressor sun alarm (A23) can now be disabled (Parameter E23, D Menu).
- Free Cooling can now run during A26/27 if Outdoor Temperature is greater than Minimum Free Cooling set temperature (default 51.8˚ +/- 1.8˚F)
- Damper alarm now disabled until 20 min after heater turn off
- Eliminated possible key combinations to bypass password protection for manufacturer’s menu
- Bug Fix: Corrected issue with humidity (A19) alarm not properly reporting when humidity sensor loose from its seat
- Bug Fix: Corrected issue where humidity (A19) alarm did not properly shut off Free Cooling
- Audible Alarm tone is now silenced by default. May be enabled by changing parameter F48 in the L05 menu
- Eliminated time limit when running step test
- Increased the available records in alarm history from 16 to 32 when remotely monitoring system
Software revision is easily accessible through the PLD user interface. Accessing the C Menu From the main menu (room temp is displayed), press Up or Down until the terminal displays Set. Press the Sel button to enter the C menu. Press the Down button to display the parameters in the order listed in the Table below.
NOTE: The most noticeable change in software is from 13B37 to 13B39. This is when the Supply Air Temperature sensors were introduced to provide tighter supply air temperature control during free cooling. And also to provide feedback on whether the damper is either stuck open or stuck closed.