Delta oH3 fault code meaning

Series: C2000 Plus, C2000-R, CH2000, CP2000, DPD-K, ME300, MS300

Motor overheat PTC / PT100

AC motor drive

Meaning:

Possible causes

Source: C2000 Plus Series User Manual (DELTA_IA-MDS_C2000 Plus_UM_TC_20250522) P421; C2000-R User Manual P217; CH2000 Series User Manual (DELTA_IA-MDS_CH2000_UM_SC_20251030) P381; CP2000 Series User Manual (DELTA_IA-MDS_CP2000_UM_SC_20250704) P391; DPD-K Series User Manual (DPD-K user manual_20211224) P316; ME300 Series User Manual (DELTA_IA-MDS_ME300_UM_SC_20250407) P180; MS300 Series User Manual (DELTA_IA-MDS_MS300_UM_TC_20260417_v2) P246

Series: CFP2000

Motor overheat PTC / PT100

AC motor drive

Meaning:

Possible causes

Source: CFP2000 Series User Manual (DELTA_IA-MDS_CFP2000_UM_SC_20250731) P283

Series: CT2000

PTC / PT100 motor overheat

AC motor drive

Meaning:

Possible causes

Source: CT2000 Series User Manual (DELTA_IA-MDS_CT2000_UM_SC_20250522) P381

Series: HES-C

Electrohydraulic servo motor overheat

hydraulic servo drive

Meaning:

Possible causes

Source: HES-C Technical Manual (DELTA_IA-MDS_VFD-HES_UM_TC_20250715) P100

Series: MH300-HS, MH300

Motor overheat PTC / PT100 / KTY-84

AC motor drive

Meaning:

Possible causes

Source: MH300 Series (High-Speed Models) User Manual (DELTA_IA-MDS_MH300-HS_UM_SC_20241213_v3) P252; MH300 Series User Manual (DELTA_IA-MDS_MH300_UM_TC_20260505) P292

Series: MP300

Motor overheat

AC motor drive

Meaning: The AC motor drive detected motor internal overtemperature. Condition: PTC-130 / KTY-84-130 motor overheat warning is used.

Possible causes

Motor locked rotor
Load too large
Ambient temperature too high
If heat-generating equipment is nearby, change its installation position.
The motor cooling system is not operating normally.
The motor fan is not operating normally.
Frequent operation at low speed

Source: MPD_MP300 Series User Manual (DELTA_IA-MDS_MPD_UM_SC_20260326) P145

Series: MX300

_1 motor overheat

AC motor drive

Meaning:

Possible causes

Source: MX300 Series User Manual (DELTA_IA-MDS_MX300_UM_TC_20260226) P190