P/N 1011512 Rev A 10/18
12
TROUBLESHOOTING
Problem
Possible Cause
Corrective Action
Unit displays system error:
“Zero Cross”
Power cord not correctly plugged in
Plug in the power cord correctly.
The power cord and/or electrical plug is
damaged
Inspect electrical wire, plug, and receptacle.
Control board is inoperable
Contact your maintenance person or Authorized Service
Agency for service.
Transformer is inoperable
Unit displays system error:
“Warmup Timeout” because
unit didn’t warmup to de-
sired temperature within 20
minutes.
Heat relay is inoperable
Contact your maintenance person or Authorized Service
Agency for service.
Heating element burnt out
Thermocouple is inoperable
Loose or burnt wiring in heating circuit
Unit displays system error:
“High Temp”
Hi-limit switch is tripped
Let the unit cool down. The hi-limit switch will clear itself
once the unit drops below 500 °F and the unit will be
operational again. If the hi-limit switch requires con-
tinuous resetting, contact your maintenance person or
Authorized Service Agency for service.
Unit displays system error:
“Open Probe TC1”
Open in thermocouple wiring
Contact your maintenance person or Authorized Service
Agency for service.
Loose or burnt wiring in thermocouple
connection
Unit displays system error:
“FRAM”
Control board is inoperable
Reset the unit. If the problem persists, contact your
maintenance person or Authorized Service Agency for
service.
Unit displays system error:
“Database Failure”
Possible data corruption on the receipts
Do a factory reset from the Menu Items menu to reset
stored receipts. Reenter any missing receipts.
Unit heats but little or no
steam is produced and/or
the product requires more
steaming than usual.
Water line valve is closed
Verify that the water line valve is open.
Strainer is restricted
Check and clean the strainer as described in the Main-
tenance section of this manual.
Quick disconnect is not fully engaged at
rear of the unit or is damaged
Remove and reengage the quick disconnect firmly until
a “click” is heard. Replace it if it is damaged.
Low or no water pressure in water line
Remove the quick disconnect. Insert from the rear of the
unit. While holding into an empty cup, press the white
plastic tip. Strong steady water flow should be noted. If
so, re-engage firmly into unit. If not present, or pressure
is low, contact your maintenance person or plumber.
Unit is not being cleaned daily or prop-
erly
Clean unit daily as described in the maintenance sec-
tion of this manual.
Improper water pressure to unit
Verify that a water pressure regulator is installed and set
to 20-25 psi.
Insufficient or excessive calcium/mineral
buildup on generator surface
Verify that a thin layer of deposits is present on the
generator surface. Refer to the maintenance section of
this manual.
Unit displays system error:
“DOOR OPEN”
Top service door is open
Close service door
Unit displays system error:
“INSERT CUP”
Cup is not installed correctly
Install cup correctly
