Troubleshooting

 

 

 

 

 

 

Error

Error

Type

Name

Cause

Solution

Code

Position

 

 

 

 

T8DA

Boost A

ALARM

Temperature Not

Bad heater rod (boost).

Measure resistance, 23 – 26

T8DB

Boost B

 

Rising

 

Ω, of heater rod, replace if

 

 

 

reading open.

 

 

 

 

 

 

 

 

 

Low chemical supply

Recirculate heated chemical

 

 

 

 

temperature.

back to drum in cold

 

 

 

 

 

conditions before spraying

 

 

 

 

 

chemical below 32°F(0°C)

 

 

 

 

 

at startup. Use Jog Mode for

 

 

 

 

 

heat exchanger heating.

 

 

 

 

Bad heated hose.

Measure hose resistance,

 

 

 

 

 

replace if reading open.

T8DH

Hose

ALARM

Temperature Not

Started spraying before

Wait until operating

 

 

 

Rising

engine and hose reached

temperatures have been

 

 

 

 

operating temperature.

reached on engine and hose

 

 

 

 

 

before spraying.

 

 

 

 

Low chemical supply

Recirculate heated chemical

 

 

 

 

temperature.

back to drum in cold

 

 

 

 

 

conditions before spraying.

 

 

 

 

 

Chemical below 32°F(0°C)

 

 

 

 

 

at startup.

V1CM

MCM

ALARM

Bus Under

Tripped MCM circuit

Visually check circuit

 

 

 

Voltage

breaker (CB02).

breaker for a tripped

 

 

 

 

 

condition. If Diagnostic

 

 

 

 

 

screen is enabled, MCM

 

 

 

 

 

Bus 14 V indicates normal

 

 

 

 

 

voltage and 1 V indicates

 

 

 

 

 

failed MCM.

V1MH

Hose

ALARM

Low Line Voltage

Loose or bad connection.

Check wiring for loose wires.

 

 

 

 

Low generator line

Measure voltage across

 

 

 

 

voltage

main power switch (CT01).

 

 

 

 

 

Voltage should measure

 

 

 

 

 

between 190 and 264 VAC.

 

 

 

 

High auxiliary inrush

Ensure compressor or

 

 

 

 

current.

air dryer are setup to be

 

 

 

 

 

continuous run and sized

 

 

 

 

 

according to manual.

V4CM

MCM

ALARM

Bus Overvoltage

Incoming line voltage is

Measure voltage across

 

 

 

 

too high.

main power switch (CT01).

V4MH

Hose

ALARM

High Line Voltage

 

 

 

 

 

Voltage should measure

 

 

 

 

 

between 190 and 264 VAC.

 

 

 

 

 

If voltage is too high, see

 

 

 

 

 

supplied alternator manual

 

 

 

 

 

for generator specifications

 

 

 

 

 

and repair.

WBNM

MCM

ALARM

Motor Sensor

Bad connection between

Check connection and

 

 

 

Fault

MCM (Port 10) and brush

cables.

 

 

 

 

wear/over temperature

 

 

 

 

 

board.

 

 

 

 

 

Bad brush wear/over

Replace Motor. See system

 

 

 

 

temperature board.

repair manual.

3A1705J

87

Page 87
Image 87
Graco 3A1705J important safety instructions T8DA, T8DB, T8DH, V1CM MCM Alarm, V1MH, V4CM MCM Alarm, V4MH, Wbnm MCM Alarm