page no. 27 of 28
PZN Aquamatic Water Heater
Doc Ref M107 issue 1.3 Sep 2018.
Page 34
Aquamatic PZN - water unit heater Users, Instructions Issue 1.2 August 2017
38.0 TROUBLESHOOTING
PROBLEM
CAUSE
SOLUTION
THE FAN DOES NOT START
No power
Check unit is powered
Main switch turned to OFF
Turn to ON
Room thermostat faulty
Check room thermostat
Fan faulty
Check fan motor
Condenser faulty
Check condenser
Overload cut-out tripped
Check absorption
POOR HEATING EFFICIENCY
Heat exchanger dirty
Clean exchanger
Airflow obstructed
Remove obstruction
Improper room temp. setting
Check regulation
Wrong water temperature
Check water temperature
Air in water circuit
Bleed air from system
Fan faulty
Check fan motor
Fan rotation inverted
Check direction of fan rotation
NOISE OR VIBRATION
Contact between metal parts
Inspect for contact
Screws loose
Tighten
Fan improperly balanced
Replace
Fan dirty
Clean