Troubleshooting - Error Codes - Quietside QVM 9-090W1-NG Manual

Error Code
01 / Overheat
02 / Low Water Level
03 / Ignition Failure
04 / Flame Sensor
05 / Heating Sensor Wire
Disconnected
06 / Heating Sensor Short
Circuit
07 / Hot Water Sensor Wire
Disconnected
08 / Hot Water Sensor
Short Circuit
09 / Fan RPM Failure
10 / Air Pressure Switch
Failure
11 / Water level Detection
Failure
12 / Flame Failure
13 / Heating Water Switch
Failure
14 / Gas Alarm (Optional)
15 / Micom Failure
16 / Mechanical Overheat
17 / DIP Switch Setting
Troubleshooting
Cause
Clogged / Reduced flow in heating
system
Circulation pump failure
No water in system / Pump failure
No make up water supply
Water fill valve failure
Check ignition transformer
Check high limit sensor / fuse
No gas supply
Air pressure switch tripped
Low gas pressure
Fan failure/Airflow pressure switch
Check molex connection
Not applicable
Not applicable
Sensor failure
Fan failure
Check speed control
Fan failure
Air flow switch failure
Blocked flue
Excessive wind gusts
Check water fill valve
Low gas pressure
Fan failure / Air pressure switch
Blocked flue
Faulty switch
Check if connected
(Red / Black wire)
Pump motor overheat
Fan motor overheat
Incorrect settings
-
Error Codes
Check strainer clean if required
Check system for flowrate
Check pump for operation–115V AC, 1 Amp
Check system / Check pump
Check system
Check system 5V DC- input signal
Input 115V AC
N/C contacts
Check gas connection
Check gas valve
Check tube for connection
Check flue for blockage
Check gas valve
Check gas pressure
Check fan for operation
Check switch, flue for obstruction
Re - connect
Check voltage Pin #19&8 on 21Pin
connector, main controller 5V DC
Check fan for operation. Input voltage 7
– 40V DC. Red-Black wires
Check fan for operation
Check tube connection
Check voltage 5V DC
Check flue for blockage
Check flue termination - relocate
Voltage 5V DC
Check gas pressure
Check gas valve
Check fan for operation
Check tube on air pressure switch
Check air pressure switch – 5V DC
Check flue for obstruction
Check voltage – 5V DC on Pin #10 on 13
pin and Pin #17 on 21 pin connectors
Re – connect
Check gas supply
Check voltage 5 – 20V DC
Check connection from t-stat to unit
Replace t-stat or micom controller
Check for pump operation 115V AC,
approx 1A (dependent on flow rate)
Check fan for operation
Check rotation
Check setting especially for 090/125/150
water heater
35
Troubleshooting
QVM 9
Series