Table Of Contents - Welbilt Frymaster FilterQuick easyTouch FQG120T Service Manual

FQG120T
Chapter 1: Service Procedures
1.1 FQ4000-120T Menu Summary Trees ............................................................................................... 1-1
1.1.1 FQ4000-120 Menu Tree General Market ............................................................................... 1-1
1.1.2 FQ4000-120 Information Statistics Menu Tree General Market ......................................... 1-2
1.2 FQ4000 Password Codes ................................................................................................................... 1-3
1.3 Service Required Errors ..................................................................................................................... 1-3
1.4 Error Log Codes .................................................................................................................................. 1-3
1.5 Component Check .............................................................................................................................. 1-5
1.6 Reading the Model Numbers ............................................................................................................ 1-6
1.7 Functional Description ....................................................................................................................... 1-6
1.8 Ignition System ................................................................................................................................... 1-6
1.9 Thermostats ........................................................................................................................................ 1-7
1.10 Smart Interface Board (SIB) ............................................................................................................... 1-8
1.10.1 Current Flow Through the SIB Board .............................................................................. 1-9
1.10.2 Frequently Used Test Points for SIB.............................................................................. 1-10
1.10.3 SIB (Smart Interface Board) Troubleshooting .............................................................. 1-10
1.10.4 SIB (Smart Interface Board) Pin Positions and Harnesses ......................................... 1-11
1.11 Accessing Fryers for Servicing ......................................................................................................... 1-12
1.12 Cleaning the Gas Valve Vent Tube .................................................................................................. 1-12
1.13 Checking the Burner Manifold Gas Pressure ................................................................................ 1-12
1.14 Adjusting the Pilot Flame ................................................................................................................. 1-13
1.15 Replacing Fryer Components .......................................................................................................... 1-13
1.15.1 Replacing the Controller ................................................................................................. 1-13
1.15.2 Replacing the SIB, FIB, Time Delay Relay Board, KCCM Board or Ignition Module 1-14
1.15.3 Overview of Vat Components ....................................................................................... 1-15
1.15.4 Replacing the Temperature Probe ................................................................................ 1-15
1.15.5 Replacing the High-Limit Probe ..................................................................................... 1-16
1.15.6 Replacing the Float Switch .............................................................................................. 1-16
1.15.7 Replacing the ATO Probe ................................................................................................ 1-17
1.15.8 Replacing the VIB (AIF) Probe ......................................................................................... 1-17
1.15.9 Replacing a Gas Valve ..................................................................................................... 1-18
1.15.10 Replacing a Pilot Assembly or Trailing Pilot Assembly ............................................... 1-18
1.15.11 Adjusting the Ignitor Assembly ...................................................................................... 1-19
1.15.12 Replacing the Filter Motor or Filter Pump .................................................................... 1-19
1.15.13 Replacing the Frypot ....................................................................................................... 1-19
1.15.14 Replacing Transformers/Pump Relay/Reset Switch Relay/Power Supply/Frypot ... 1-21
1.16 Troubleshooting and Problem Isolation ......................................................................................... 1-21
1.16.1 Heating (Ignition) Failure ................................................................................................ 1-22
1.16.2 Improper Burner Function ............................................................................................. 1-23
1.16.3 Improper Temperature Control .................................................................................... 1-24
1.16.4 Controller Malfunctions .................................................................................................. 1-24
1.16.5 Filtration Malfunctions .................................................................................................... 1-24
1.16.6 Leakage ............................................................................................................................. 1-25
1.17 Troubleshooting Guides .................................................................................................................. 1-26
1.17.1 Troubleshooting the 24 VAC Circuit .............................................................................. 1-26
1.17.2 Troubleshooting the Gas Valve ...................................................................................... 1-27
easyTouch ® FILTERQUICK
SERVICE MANUAL

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