INTELLI-HOOD® TROUBLESHOOTING GUIDE
Contents
1. Check that the number of temp sensors installed matches the number of temp sensors programmed Under menu hit Status 1 and go to hood controllers 3 and hit enter If a temperature sensor is not connected properly or does not work then it will show as missing On the hood controller there are different ports that can be used to connect the cables for temperature sensors swapping those may help to get rid of the fault Verify temperature sensor resistance is about 100 Ohms Cycle power to the unit Temp probe may be defective Temp offset may be programmed incorrectly Temperature not measuring correctly e Variable Frequency Drives 7125 Fault Description 10605 0 61 _ __ Depends on VFD type e Confirm Fault codes and refer to VFD Operations Manual 001 1 1 0 Melink Corporation 8 ii mk Energy solutions for a brighter tomorrow f Exhaust Fans EF s Fault Description _______________ temstoCheck ___________ EF will not run e Confirm no faults at the Variable Frequency Drive VFD e Verify disconnect on the roof is turned on EF has high current draw e Confirm motor rotation is spinning in the correct direction e Confirm actual condition of the motor Belt tension correct or general cleaning performed Grease filters may need to be cleaned Check belt on fan it may be broken or loose Obstruction in the duct If installed dampers stuck shut Duct cle2. data collision Auxiliary Input Output AIO AIO won t work e Check connections 24VDC and digital comms from System Controller SC to AIO Confirm device exists in configuration configuration settings and associated AUX air flows programmed and their associated devices providing speed reference Confirm parity in SC and Variable Frequency Drives 75 is set to 8 N 1 Confirm dip switch on module set to Normal lid ntelli Hood Melink Corporation 10 ii INK Energy solutions for a brighter tomorrow j Auxiliary Light Controller ALC Fault Description ALC won t work Check Ethernet cable and port connection Confirm light controller address selected on touchpad for lights operation Confirm device exists in configuration Confirm lighting circuit is connected to ALC from control k Auxiliary Power Device APD Fault Description ______________36105 0 606 __________ APD is not boosting signal Check circuit breaker Check connections Check for power lid ntelli Hood Melink Corporation 11
3. INTELLI HOQOD TROUBLESHOOTING GUIDE Ores Melink Corporation 513 965 7300 www melinkcorp com Last Updated 7 22 2015 nk Energy solutions for a brighter tomorrow 11 111 IV Oo 13 gt QA Q OY Table of Contents About this Document Related Documents Glossary of Abbreviations Diagnostics Troubleshooting Touchpad Display System Controller Hood Controller Optic Temp Sensor VFD s EF s MUA Interlock BAS BACnet AIO ALC APD ill ntelli Hood 1 Page O O N N WD A A WU N N a p e e O 11 ii INK Energy solutions for a brighter tomorrow Intelli Hood Troubleshooting Guide About this Document The purpose of this document is to provide basic troubleshooting techniques for the Intelli Hood Kitchen Control System The intended audience of this document is the end user of the system the building owner kitchen manager kitchen staff or maintenance technician Related Documents Operations and Maintenance Manual e Provides information regarding basic operation amp maintenance Installation Manual e Provides detailed installation instructions of the components including mechanical installation of parts power wiring and control wiring VFD Manuals Refer to documents provided by the VFD manufacturer for information regarding any aspect of the Variable Frequency Drives including power wiri
4. anout removed EF are running at 100 but the MUA not running e System Controller SC has lost power Firemode e Possible override interlock to Variable Frequency Drives VFD s from other control sources if power is present and System Controller SC is operating EF is running but low to no air flow g Make Up Air MUA Interlock Fault Description MUA will not turn on e Confirm start stop from a 24VDC relay or internal relay is connected from the SC to the correct terminal points on the MUA control circuit System will not speed up when call for heat OR call Confirm closure is received at the System for cool Controller SC for the correct terminal points of the Make Up Air MUA Generally after the Outdoor Air Temperature Sensor but before the Low Air Pressure switch ili ntelli Hood Melink Corporation 9 ii mK Energy solutions for a brighter tomorrow h Building Automation System BAS amp BACnet Fault Description BAS cannot discover System Controller SC e Check Ethernet cable and port connection Confirm IP address in the About Screen Check IP settings are configured per site s IT requirements in the System Menu Static IP If not using DHCP Netmask Gateway Domain Name System DNS Server 1 DNS Server 2 BAS cannot discover Exhaust Fan EF amp Make Up Air e Destination Network DNET number might MUA data need to be changed from 1 to a unique number to avoid
5. ng control wiring programming and faults Information can be found on their respective web pages System is continually expanding capabilities Presently capable of utilizing Modbus control for ABB Allen Bradley Trane Danfoss Siemens Schneider Samsung amp Yaskawa lid ntelli Hood Melink Corporation 2 III ink Energy solutions for a brighter tomorrow Glossary of Abbreviations The following terms and abbreviations are used throughout literature pertaining to the Intelli Hood System IH VFD 12 APU SC HC AT AIO ALC APD EF MUA Intelli Hood Variable Frequency Drive Touchpad Air Purge Unit System Controller Hood Controller Auxiliary Touchpad Auxiliary Analog Out Device Auxiliary Light Controller Auxiliary Power Device Exhaust Fan Make Up Air 001 1 1 0 Melink Corporation 3 ii INK Energy solutions for a brighter tomorrow IV Diagnostics Troubleshooting a Touchpad Display TP Fault Description Temp Fault Make sure that the sensors are clean It is not always necessary unless it has a large amount of grease or build up Check the connections that go from the temperature probe to the Hood Controller Check for any damaged components Check that the number of temp sensors installed matches the number of temp sensors programmed Under menu hit Status 1 and go to hood controllers 3 and hit enter If a temperature sens
6. ontroller HC may have lost communication to System Controller SC e Confirm cable connections to other HC s amp SC Hood Controller HC LED pulsing but not e Confirm HC rotary switches are set to proper communicating correctly address e If HCis last in the Hood Network string confirm Terminal Resistor dip switch is on APU fan s not working e Check for voltage drop issue e Check cable connections 1 d Optic Temp Sensor Fault Description ItemstoCheck __________ Optic Fault Verify no optic sensor obstructions in hood Emitter Missing White printed circuit Board Confirm sensors are clean Receiver Missing Blue Printed Circuit Board Make sure that the cables are connected tightly on optic boards amp on the hood controller Check alignment use web application to check gain voltage levels If see attempts to calibrate when changing alignment hardware is working properly Using the keypad go to Status and under hood controller verify that the optics are not missing Many smartphone cameras can see Emitter Light Use phone camera to verify light is lid ntelli Hood Melink Corporation 7 ink Energy solutions for a brighter tomorrow Temp Fault Make sure that the sensors are clean It is not always necessary unless it has a large amount of grease or build up Check the connections that go from the temperature probe to the HC Check for any damaged components
7. or is not connected properly or does not work then it will show as missing Check Temperature offset On the hood controller there are different ports that can be used to connect the cables for temperature sensors swapping those may help to get rid of the fault Check if temperature sensor resistance is approximately 100 Ohms Cycle power to the unit Optic Fault Verify no obstructions to optic sensor infrared beam Ansul Pipes pots pans etc Confirm sensor lenses are clean Make sure that the cables are connected tightly on optic boards amp on the hood controller Check alignment use web application to check gain voltage levels If see attempts to calibrate when changing alignment hardware is working properly Using the keypad go to Status and under hood controller verify that the optics are not lid ntelli Hood Melink Corporation 4 ii mk Energy solutions for a brighter tomorrow missing e Cycle power to the unit Variable Frequency Drive VFD Comm Fault e VFD type ABB Allen Bradley Danfoss etc may not be identified correctly in Exhaust Fan or Aux Airflow programming Check EF amp MUA Aux Airflow status and confirm VFD type is correct Check display on VFD s for a fault i e F5 or F13 Go to respective VFD and confirm if any fault codes exist and troubleshoot in accordance with VFD User s Manual Touchpad Frozen System may have lost configuration or configuration file was c
8. orresponding EF s amp MUA s devices to confirm which TP is actually selected b System Controller SC Fault Description LED s not on e System may have lost input power e Check connectors from Power Brick to I O Board Digital Inputs Outputs programmed but inactive e Verify DI DO s are assigned to Exhaust Hood Auxiliary Input Output AIO not working e Verify System Controller SC and Variable Frequency Drives 725 parity is set to 8 N 1 Lights not working e Check fuse if blown confirm lighting circuit is less than 15 amps Confirm lighting leads are wired to System Controller SC or Auxiliary Light Controller ALC for control 24VDC is not there Check 24VDC fuse Check 24VDC connection from power board to base board Verify DI DO s are assigned to exhaust hoods System won t turn on Check power dipswitch located near fuse is ON Check for AC power may be interrupted by a shunt trip or Ansul micro switch Check circuit breaker panel If power is at the System Controller SC check fuse Check Power Brick to I O Board connections Possible interlock with enable feature selected ili ntelli Hood Melink Corporation 6 nk Energy solutions for a brighter tomorrow to Building Automation System BAS or Water Wash Panel Digital Input Outputs are not controlling proper e Confirm Hood Groups programmed correctly hoods c Hood Controller HC LED not pulsing e Hood C
9. orrupted tech support downloads the configuration files and emails it to the technician working on site The tech will drag it to the root directory of a USB and save it as a ConfigurationFiles zip file power off the unit place USB in port cycle power on to the unit Verify that the base board LED s are lighting up Power the system controller off replace the cell battery on the base board then power back on Confirm proper addressing of Network Devices Hood Controllers and Touchpads Unable to enter System Configuration Enter menu screen on Touchpad and with System Configuration selected press and hold up down arrows until text changes from red to blue Approx 15 seconds Touchpad not displaying correct devices OR Check hardcoded address on Touchpad TP Multiple Touchpads on same SC are frozen press and hold the up down arrows on the TP for 30 seconds Change address to correct number Power cycle System Controller to hardcode new address Replacement TP maybe defaulted to address of 1 e Check programming of devices in service app Light Button Works but TP is blank e TP ribbon cable loose between boards OR boards not seated 173 ilidIntelli Hood Melink Corporation 5 ii mk Energy solutions for a brighter tomorrow control is set to correct Touchpad address Touchpad displaying incorrect Exhaust Fan EF amp e Check Exhaust Hood menu Confirm Make Up Air MUA Touchpad Display Node e Check c
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