Laars mascot ft MFTHW Installation And Operation Instructions Manual page 69

Mascot FT, Heating Only, Boiler
SECTION 6. Error Codes
Error
Error Code Description
Code
Venting (Exhaust) Sensor
35
Open or Short
37 Abnormal Supply Frequency
Error Appears When Control
38 Stores Data, but Data is not
Saved
Gas Leakage is Detected for
40 Greater than 5 seconds, or
three times within 10 minutes
Fan Speed too High with
41
Flame On
42 Jumped Wire Disconnected
Burner Overheat Switch
43
Open
Air Pressure Sensor (APS)
44
Fault
Air Pressure Sensor (APS)
45
Open
Fan Speed Feedback Signal
61
Abnormal
(continued)
Possible Remedies
This Error Code will go away when exhaust temperature decreases.
If Error happens again:
1. Check Venting (exhaust) temperature sensor. Ensure connections are secure.
2. Check sensor resistance. If resistance is zero, replace the sensor.
3. Check vent pipes for blockage.
4. If the problem persists, replace the main control
Supply frequency is too high to operate. This Error Code will go away when
supply frequency returns to normal operating range.
If Error happens again:
1. Ensure appliance is properly wired to a power source meeting the
requirements on the rating plate.
2. If problem persists, replace the main control.
Press the Power button to clear the Error Code.
Replace the main control.
IMPORTANT: If you smell gas, STOP! Follow the instructions on page 2, this
manual, and call a qualified service technician or the fuel gas utility.
Press the Power button to clear the Error Code.
If Error happens again:
1. Check the appliance cover. Ensure it is secure.
2. Check gas connections for leakage with a soapy solution. Fix any leaks.
3. Check condition of the burner assembly.
4. If the problem persists, replace the main control.
Press the Power button to clear the Error Code.
If Error happens again:
1. Check the vent connections for blockages.
2. Check the burner assembly.
3. Check fan operation. If fan appears to be operating normally but RPMs are too
high, replace the fan.
4. If the problem persists, replace the main control.
Press the Power button to clear the Error Code.
If Error happens again:
1. Ensure the jumped wire is properly connected.
2. If the problem persists, replace the main control.
Press the Power button to clear the Error Code.
If Error happens again:
1. Check burner overheat switch connections. Ensure connections are secure.
2. Check switch resistance. If resistance is zero, replace the switch.
3. If the problem persists, replace the main control.
Press the power button to reset
If error happens again:
1. Check the vent pipe for blockages.
2. Check the vent pipe for blockages.
3. If error do not clear, replace the APS
4. If the problem persists, replace the main control.
Check the aps connection.
1.If APS is closed and connections are secure, check APS connection.
2. If the problem is not happen, replace the APS
3. If the problem persists, replace the main control.
This Error Code will go away when the condition is remedied.
If Error happens again:
1. Check the connections to the fan. Ensure all are secure.
2. If the fan does not rotate during the ignition sequence, check for AC8V~26.5V
power at the fan connection. If AC8V~26.5V power is present at the control,
replace the fan. If the blower does not have AC8V~26.5V power, check power at
the control. If AC8V~26.5V power is not present at the control, replace the control.
3. If the problem persists, replace the main control.
Page 67
Recover
methods
Soft Lock
Soft Lock
Hard Lock
Hard Lock
Hard Lock
Soft Lock
Hard Lock
Hard Lock
Soft Lock
Soft Lock