Delta H2.5 User Manual

Error
Message
E28: UVR-Slow
E30: OVR(PV)
E34: Insulation
1. Actual utility voltage is under the
UVR setting
2. Incorrect country or Grid setting
3. Detection circuit malfunction
1. Actual Solar voltage is over
510Vdc (H2.5) or
560Vdc (H3/ H3A/ H4A/ H5A)
2. Detection circuit malfunction
1. PV array insulation fault
2. Large PV array capacitance
between Plus to Ground or Minus
to Ground or both.
3. Detection circuit malfunction
1. Check the utility voltage on the
inverter terminal
2. Check country & Grid setting
3. Check the detection circuit inside
the inverter
1.
Modify the solar array configuration
and make the Voc less than
500Vdc (H2.5) or
550Vdc (H3/ H3A/ H4A/ H5A)
2. Check the detection circuit inside
the inverter
1.
Check the insulation of Solar inputs
2. Check the capacitance, dry PV
panel if necessary
3. Check the detection circuit inside
the inverter
Possible cause Action
Fault
Message
F01: DC Injection
F05: NTC OTP
F06:
NTC0 Circuit Fail
F07: NTC LTP
1. Utility waveform is abnormal
2. Detection circuit malfunction
1. The ambient temp. is over 60℃
2. Detection circuit malfunction
1. Ambient temp. >100℃ or <-40℃
2. Detection circuit malfunction
1. Ambient temp. <-30℃
2. Detection circuit malfunction
1. Check the utility waveform.
Grid connection of inverter need
to be far away from non-linear load
if necessary
2. Check the detection circuit inside
the inverter
1. Check the installation ambient
temperature and environment
2. Check the detection circuit inside
the inverter
1. Check the installation ambient
temperature and environment
2. Check the detection circuit inside
the inverter
1. Check the installation ambient
temperature and environment
2. Check the detection circuit inside
the inverter
F09:
Ntc2 Circuit Fail
1. Ambient temp. >100℃ or <-40℃
2. Detection circuit malfunction
1. Check the installation ambient
temperature and environment
2. Check the detection circuit inside
the inverter
Possible cause Action
Table 9-2 : Fault Message
44
Error Message and Trouble Shooting

Delta H2.5 Specifications

General

Brand	Delta
Model	H2.5
Category	Inverter
Language	English