1 – 14Chapter 1 TroubleshootingFIP1.4 Fan ErrorStep Check Yes NoPossible causes:FAN MAIN (PL1.1.14)FAN SUB (PL8.1.5)LVPS (PL12.1.5)HVPS/MCU (PL12.1.19)1 Checking FAN MAIN for rotation (1).Does FAN MAIN rotate, when the power is turned ON? Go to step 2. Go to step 5.2 Checking FAN SUB for rotation (1).Does FAN SUB rotate, when the power is turned ON? Go to step 3. Go to step 9.3Checking FAN MAIN for rotation (2).Does FAN MAIN rotate in high-speed?Check using Chapter 2 Diagnostic [Fan Motor, HighSpeed Test].Go to step 4. Go to step 5.4Checking FAN SUB for rotation (2).Does FAN SUB rotate in high-speed?Check using Chapter 2 Diagnostic [Fan Motor, HighSpeed Test].Replace HVPS/MCU, and watchFUN SUB for awhile.(RRP12.10)Go to step 9.5Checking the power to FAN MAIN.Is FAN MAIN connected correctly, and is the voltageacross P/J24-18(+) and P/J24-17(-), 24 VDC?(12 VDC, when half-speed)?Go to step 6. Go to step 7.6Checking the FAN ALARM signal (1).Is the voltage across P/J24-17(+) and P/J24-16(-), 0.82VDC or more?Replace FANMAIN. (RRP12.6)Replace HVPS/MCU. (RRP12.10)7Checking after replacing FAN MAINReplace the FAN MAIN.Does FAN Error occur when the power is turned ON?Go to step 8. End of work8Checking after replacing LVPSReplace the LVPS.Does FAN Error occur when the power is turned ON?Replace HVPS/MCU.(RRP12.10)End of work9Checking the power to FAN SUBIs FAN SUB connected correctly, and is the voltageacross P/J27-19(+) and P/J27-18(-), 24 VDC?(12 VDC, when half-speed)?Go to step 10. Go to step 11.10Checking the FAN ALARM signalIs the voltage across P/J27-18(+) and P/J27-17(-), 0.82VDC or more?Replace FANSUB (RRP8.2)Replace HVPS/MCU. (RRP12.10)11Checking after replacing FAN SUBReplace the FAN SUB.Does FAN Error occur when the power is turned ON?Go to step 12. End of work12Checking after replacing LVPSReplace the LVPS.Does FAN Error occur when the power is turned ON?Replace HVPS/MCU.(RRP12.10)End of work
