York
0-10V
ProtectVFD speed reference
Drive is enabled but stays at min Hz or 0 because analog / serial speed is missing.
Walk 0-10V in Diagnose
Sign in for the next measurement
First check
1 Read the drive before you cycle power
On York ZF photograph the VFD keypad or the unit-board fan alarm (OC, LU, OU, GF, OH, limp). Power-cycle wipes what you needed. 0–10 VDC at the speed-reference pair under a high-fan call. Typical occupied cool is not 10 V — check the unit-board fan table.
Expect: Live drive code written down. Line voltage at L1/L2/L3 of the drive.
The rest of the walkthrough is Diagnose.
On the plates
- 0–10 VDC at the speed-reference pair under a high-fan call. Typical occupied cool is not 10 V — check the unit-board fan table.
- 0 V with enable = broken analog wire, board analog dead, or the drive is set for a different reference (serial vs 0–10).
- 10 V at all times = board commanding 100%. High static / oC will follow.
Plates that use 0-10V
Same number, other makers
0-10V on York is not the same code on these plates.