Mitsubishi Electric FR-F740 EC Instruction Manual page 589

Troubleshooting
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
FR-F700 EC
E.PID
PID signal fault
If any of PID upper limit (FUP), PID lower limit (FDN), and PID deviation limit (Y48) turns
ON during PID control, inverter shuts off the output. This function is active under the follow-
ing parameter settings: Pr. 554 "PID signal operation selection" ≠ "0" or "10", Pr. 131 "PID
upper limit" ≠ "9999", Pr. 132 "PID lower limit" ≠ "9999", and Pr. 553 "PID deviation limit" ≠
"9999". This protective function is not active in the initial setting (Pr. 554 = "0", Pr. 131 =
"9999", Pr. 132 = "9999", Pr. 553 = "9999").
Check if the measured PID value is greater than the upper limit (Pr. 131) or smaller than the
lower limit (Pr. 132).
Check if the absolute PID deviation value is greater than the limit value (Pr. 553).
Make correct settings for Pr. 131 PID upper limit, Pr. 132 PID lower limit, Pr. 553 PID devia-
tion limit. (Refer to section 6.19.1)
E.13
Internal circuit error
Appears when an internal circuit error occurred.
Please contact your sales representative.
E.PCH
Pre-charge fault
When the pre-charged time exceeds the Pr. 764 (Pr. 769) "Pre-charge time limit", or the
precharged amount exceeds Pr. 763 (Pr. 768) "Pre-charge upper detection level", the pro-
tective circuit activates, and the inverter output is shutoff. This function is available when
Pr. 764 (Pr. 769) or Pr. 763 (Pr. 768) is set. This protective function is not available in the
initial status. (Refer to section 6.19)
Check if the Pr. 764 (Pr. 769) "Pre-charge time limit" setting is too low.
Check if the Pr. 763 (Pr. 768) "Pre-charge upper detection level" setting is too low.
Check if the automatic switchover frequency set in Pr.127 (Pr.754) is too low.
Check if there is a break in the connection with a pump.
Set the Pr. 764 (Pr. 769) "Pre-charge time limit" setting higher.
Set the Pr. 763 (Pr. 768) "Pre-charge upper detection level" setting higher.
Set the automatic switchover frequency higher in Pr. 127 (Pr. 754).
Check the connection with a pump.
Causes and corrective actions
FR-PU04 Fault 14
FR-PU07 Fault
FR-PU07(-01) PID Signal Error
FR-PU04
Fault 13
FR-PU07(-01)
FR-PU04 Fault 14
FR-PU07 Fault
FR-PU07(-01) Precharge Error
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