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Summary of Contents for Danfoss AK-SM 800A
- Page 1 User Guide Danfoss troubleshooting guide for supermarket electronics www.danfoss.com...
- Page 2 User Guide | Danfoss troubleshooting guide for supermarket electronics Contents 1. AK-SM 800A ..................................3 Compressors not coming on with high suction ......................3 IO Offline ...................................... 3 Case Controller ‘Mismatch’ Issue ............................3 AK-SM 800A Stuck on ‘Verifying Nodes’ ..........................3 2.
- Page 3 (cutout should be higher than cutin) b. For phase loss, oil fail, see if the device sending Danfoss a signal is tripped (i.e. phase loss monitor, oil sensor). If so, that device needs to be investigated.
- Page 4 (cutout should be higher than cutin) b. For phase loss, oil fail, see if the device sending Danfoss a signal is tripped (i.e. phase loss monitor, oil sensor). If so, that device needs to be investigated.
- Page 5 1. Did MAC address revert back to 00 : 0B : 2D : 00 : 4B : 00 ? a. If yes, AK-SM 800 must be replaced b. If no, please contact Danfoss Tech Support and supply the MAC address. Tech Support will help reinsert the license.
- Page 6 User Guide | Danfoss troubleshooting guide for supermarket electronics 3. AK-CC 550A AKV Not Opening 1. Is proper voltage at terminals 5&6 (should match coil voltage spec)? 2. Is case controller calling for valve to be open? (parameter u23 > 0%) a.
- Page 7 1. Ensure module has steady voltage, ground connected on power plug, shield connected on comm plug 2. If comm module is not powered by Danfoss power supply, switch to one. Lack of filtering from other manufacturers or direct from RTU condenser, etc can lead to this.
- Page 8 Complete Rescan again. Missing License 1. Please contact Danfoss Tech Support and supply the MAC address. Tech support will help reinsert the license 2. The controller will still operate regularly, but you won’t be able to make any changes to configuration a.
- Page 9 If not set to 0, will need to connect to 255 that is address 0 (if host network exists) b. Otherwise, controller address will need to be changed to 0 and 255 reset 2. If using Danfoss direct connect cable, ensure you are connecting to port on side of controller, above latch 3.
- Page 10 © Danfoss | Climate Solutions | 2022.02 BC337731384771en-000301 | 10...