Worcester Bosch Greenstar 27/30 I system Error Codes

Worcester Bosch Greenstar 27/30 I system Boiler Error Codes Fault Description System Behaviour T1 Ignition test – checking the igniter spark T2 Fan test – checking the basic fan T3 Pump test – checking the basic pump T4 Three way valve test T6 Ionisation oscillator test 9A 362 error – incorrect HCM fitted 9U 233 …

Worcester Bosch Greenstar 27/30 I system Error Codes Read More »