8
Danger
Please utilise extreme caution when performing work within the compressor. Wear
appropriate PPE
(Personal Protective Equipment)
, follow
lock out-tag out
procedures, and
ensure all safety procedures
.
Hats switch physically damaged / not connected ?
No
Yes
“USER 1” FAULT : THERMAL ISSUE (OVERHEATING MOTOR and/or COMPRESSOR)
(“User 1” fault displayed and 8.03 shows “disabled”)
DRIVE CONTINUOUSLY ON USER1 FAULT
Prior to troubleshoot the unit, let it cool down for 15 minutes
Problem is likely to be due to :
Loose / damaged cable
Defective Hats switch / thermal sensor in the motor
Wrong harness
Replace Hats switch – Try to start the unit –
Does it keep tripping continuously
Open drive –Loose connections ?
(inputs # 10 and 13)
Yes
Problem fixed
No
Reconnect – “User 1” fault can
be reset and unit restarts ?
Yes
Yes
Disconnect 10 and 13 and
check continuity –
Continuity OK ?
No
No
Phase I-II harness
Nirvana harness
Swap drive – Mount a
new drive – Problem
fixed or contact
Ingersoll Rand
No
Yes
Molex connector ok
(male and female
parts well connected
and no loose cable) ?
Disconnect two parts –
Motor thermal sensor
continuity OK ?
Yes
Swap stator – Unit
restarts ?
No
Reconnect -
Continuity OK ?
No
No
Drive restarts?
Yes
No
Cable cut or
disconnected between
drive inputs and hats
switch
Repair or replace
broken cable – Drive
restarts ? User 1
fault can be reset ?
Yes
See Appendix 2 for detailed explanation on User 1 fault message
Replace hats switch –
Drive restarts ? User
1 fault can be reset ?
No
No
Problem fixed
Yes
Contact
Ingersoll Rand
Yes
