YASKAWA Z1000 - Diagnosing and Resetting Faults

HOA Keypad Display Fault Name
The bypass detected a Fire Stat fault condition.
Inspect the digital input programmed for Fire Stat (Z2-0o = 38).
Check the connected device for continuity.
Check Bypass Digital Input Invert Settings in Z2-09 to Z2-16.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display Fault Name
FB21
<1>
Freeze Stat
Cause Possible Solution
The bypass detected a Freeze Stat fault condition.
Inspect the digital input programmed for Freeze Stat (Z2-0o = 39).
Check the connected device for continuity.
Check Bypass Digital Input Invert Settings in Z2-09 to Z2-16.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display Fault Name
FB22
<1>
Smoke Alarm
Cause Possible Solution
The bypass detected a Smoke Alarm fault
condition.
Inspect the digital input programmed for Smoke Alarm (Z2-0o = 40).
Check the connected device for continuity.
Check Bypass Digital Input Invert Settings in Z2-09 to Z2-16.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display Fault Name
FB23
<1>
Over Pressure
Cause Possible Solution
The bypass detected an Over Pressure fault
condition.
Inspect the digital input programmed for Over Pressure (Z2-0o = 41).
Check the connected device for continuity.
Check Bypass Digital Input Invert Settings in Z2-09 to Z2-16.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display Fault Name
FB24
<1>
Low Suction
Cause Possible Solution
The bypass detected a Low Suction fault condition.
Inspect the digital input programmed for Low Suction (Z2-0o = 42).
Check the connected device for continuity.
Check Bypass Digital Input Invert Settings in Z2-09 to Z2-16.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display Fault Name
FB25
<1>
Vibration Switch
Cause Possible Solution
The bypass detected a Vibration Switch fault
condition.
Inspect the digital input programmed for Vibration Switch (Z2-0o = 43).
Check the connected device for continuity.
Check Bypass Digital Input Invert Settings in Z2-09 to Z2-16.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display Fault Name
FB26
<1>
Option On Drive
Cause Possible Solution
A communications option PCB is mounted
directly on drive terminal CN5.
Remove the option from the drive and install it on terminal CN5 on the bypass controller.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display Fault Name
Fn1
External Fan Fault
External fan failure
Cause Possible Solution
6.4 Fault Detection
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
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Diagnostics & Troubleshooting