Error code troubleshooting – 10 of 16
Error code
number
Name Description Corrective action
106
Low current
on CS2
A current less than
10 amps has been
detected by
current sensor 2.
See the chopper test later in this section.
107
High current
on CS3
A current greater than
35 amps has been
detected by
current sensor 3.
See the chopper test later in this section.
108
Transfer at
power-up
The system has detected
current on the work lead
during power-up.
1. Verify that the electrical connections to current sensors CS1
And CS3 are correct and not damaged.
2. Replace PCB 3 if connections are correct and not
damaged.
3. Verify that the main contactor (CON1) is not welded closed,
or closing at power-up.
109
Coolant flow
at power-up
“Coolant flow OK” signal
is active during power-up
and before pump motor
is activated.
Either the coolant flow sensor was bypassed or it is faulty.
1. Verify that there is power at the sensor.
2. Verify that all the connectors have good connections.
111
Coolant
overtemp at
power-up
Coolant is indicating an
overtemp at power-up.
1. Verify that the coolant temperature sensor has not been
bypassed or the wires to the sensor are not shorted out in
the harness.
2. If not, the coolant temperature is over the set point and
needs time to cool to 70° C (158° F).
116
Watchdog
interlock
An error occurred with the
CAN communication
system.
1. Verify that cable number 5 (power supply-to-gas console
control cable) is not damaged and is properly connected to
PCB3 and the rear of the gas console.
2. Verify that cable number 6 (power supply-to-gas console
power cable) is not damaged and is properly connected
inside the power supply and to the rear of the gas console.
3a. (Manual gas console) Verify that D1 (+5 VDC) and D2
(+3.3 VDC) are illuminated on PCB2 inside the gas
console. These LEDs indicate power to PCB2.
3b. (Auto gas console) Verify that D17 (+5 VDC) and D18
(+3.3 VDC) are illuminated on PCB2 inside the gas
console. These LEDs indicate power to PCB2.
4. If power is present at PCB2 and PCB3 and both gas
console cables are good, then PCB2 or PCB3 has failed.
Use the CAN tester to verify which board needs to be
replaced.
123
MV1 error
Auto Gas
Only
Motor valve 1 did not
move into position within
60 seconds.
1. Verify that LED D17 or D18 illuminates on the AC valve
driver PCB in the selection console. If either illuminates,
replace the motor valve. If they do not illuminate, replace
PCB3.
HPR400XD Manual Gas Instruction Manual 5-19
MAINTENANCE
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