Maintenance
HPR800XD Auto Gas  –  806500  5-21
Error code troubleshooting  –  error codes 116 to 133, 316
Error code 
number
Name Description Corrective action
116
Primary
316
Secondary
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.
5.  Verify that the gas console control PCB and power 
distribution PCBs are securely mounted to the chassis at 
all four corners.
123
MV1 error
Auto Gas
Only
Motor valve 1 did not 
move into position within 
60 seconds.
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.
124
MV2 error
Auto Gas
Only
Motor valve 2 did not 
move into position within 
60seconds.
Verify that LED D19 or D20 is illuminating on the AC valve 
driver PCB in the selection console. If either illuminates, 
replace the motor valve. If they do not illuminate, replace 
PCB3.
133
Unknown gas 
console type
The power supply control 
board does not recognize 
the gas console that 
is installed or has not 
received a CAN message.
1.  Verify that the part numbers of PCB2 and PCB3 are 
correct.
2.  Verify that the power supply-to-gas console control cable 
is not damaged and is properly connected to PCB3 and 
the rear of the gas console.
3.  Verify that the 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.
4.  Verify that D1 (+5 VDC) and D2 (+3.3 VDC) are 
illuminated on PCB2 inside the gas console. These LEDs 
indicate power to PCB2.
5.  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.