56 - FORM NO. 56041516 - ConvertaMAX
™
28/34, I-MAX
™
28HD/34HD, BA 750/850
CONTROLLER ERROR CODES
For all error codes: Turn key switch off & then back on. If error persists consult chart below and/or service manual.
Error
Code
Description
Possible Cause
Corrective Action
1
Control fault
Control failure
Turn key switch off & back on. If problem persists consult service manual.
2
Critical control fault
Control failure
Turn key switch off & back on. If problem persists consult service manual.
Tripped wheel drive circuit breaker
Reset circuit breaker
Throttle not in neutral (HPD fault)
Verify that throttle is in neutral before turning key on. Adjust throttle mechanism.
3
Drive system fault
Wheel drive system problem
Consult service manual.
Scrub deck obstruction / binding
Remove obstruction. Lubricate mechanism.
4
Scrub deck lift actuator overload
Defective actuator motor
Consult service manual.
5
Scrub deck lift actuator severe overload
See error code 4
Bad electrical connection
Check all conections to actuator motor.
Defective actuator motor
Consult service manual.
6
Scrub deck lift actuator circuit open / output fault
Control failure
Consult service manual.
Scrub motor obstruction
Remove obstruction. Check to see that motors rotate freely.
7
Scrub motor overload
Defective scrub motor
Consult service manual.
8
Scrub motor severe overload
See error code 7
Bad electrical connection
Check all conections to scrub motors.
Defective scrub motor(s)
Consult service manual.
9
Scrub motor circuit open
Control failure
Consult service manual.
10
Scrub motor contactor contacts shorted
Contactor failure
Consult service manual.
11
Not used
Contactor failure
Consult service manual.
12
Scrub motor contactor coil overload
Coil suppression diode failure
Consult service manual.
13
Scrub motor contactor coil severe overload
See error code 12
Bad electrical connection
Check all connections to scrub motor contactor.
Contactor failure
Consult service manual.
14
Scrub motor contactor coil circuit open / output fault
Control failure
Consult service manual.
15
Not used
16
Not used
This error will occur if the machine temperature is below 32*F or above 185*F.
Machine temperature out of range
This error will not prevent operation of the machine. Scrub pressure may be affected.
17
Scrub motor cable thermistor fault
Thermistor failure
Consult service manual.
Squeegee obstruction / binding
Remove obstruction. Lubricate mechanism.
18
Squeegee lift actuator overload
Defective actuator motor
Consult service manual.
19
Squeegee lift actuator severe overload
See error code 18
Bad electrical connection
Check all conections to actuator motor.
Defective actuator motor
Consult service manual.
20
Squeegee lift actuator circuit open / output fault
Control failure
Consult service manual.