YASKAWA Z1000 Technical Manual page 235

HOA Keypad Display
The bypass detected a Fire Stat fault condition.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display
<1>
FB21
Cause
The bypass detected a Freeze Stat fault condition.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display
<1>
FB22
Cause
The bypass detected a Smoke Alarm fault
condition.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display
<1>
FB23
Cause
The bypass detected an Over Pressure fault
condition.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display
<1>
FB24
Cause
The bypass detected a Low Suction fault condition.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display
<1>
FB25
Cause
The bypass detected a Vibration Switch fault
condition.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display
<1>
FB26
Cause
A communications option PCB is mounted
directly on drive terminal CN5.
<1> Available in bypass controller software versions VST800400 and later.
HOA Keypad Display
Fn1
Cause
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
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.
Freeze Stat
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.
Smoke Alarm
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.
Over Pressure
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.
Low Suction
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.
Vibration Switch
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.
Option On Drive
Remove the option from the drive and install it on terminal CN5 on the bypass controller.
External Fan Fault
External fan failure
6.4 Fault Detection
Fault Name
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
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