Service Manual

Page 14

P4 – Information Menu: Displays informational data regarding the unit. This submenu can be useful for

diagnosing the appliance, as needed.

P7 – Gas Type Menu: This menu allows selection of the gas type for the appliance. Improper gas type will

affect appliance performance and can lead to unsafe operating conditions. To change the gas type, press

the Up and Down buttons to the correct gas type. Press the P button to set the appliance to the specific

gas type. See the Manifold section for more information on gas type conversion.

P4 - Information

Chamber NTC - Water Temperature at exit of heat

exchanger

Inlet NTC - Current temperature of the temperature

sensor of the water inlet pipe

Outlet NTC - Current temperature of the temperature

sensor of the water outlet pipe

Flow - Total water flow through the unit. Includes flow

through both the main and bypass valves

Barometric Pressure - Current barometric pressure at

installation location

Fan Speed - Current fan speed (Hz.)

Output Power - Current burner power %

SS Hex NTC - Temperature sensor of the flue gases

between the Primary and Secondary Heat Exchanger

Exhaust Gas NTC - Temperature sensor of the flue gases

at the exhaust

Ambient NTC - Current temperature inside the cabinet.

Sensor is located near the fan.

10d

External Tank - Current temperature on the external tank

(if connected)

Exit - (Return to P4 menu)

First most recent error code

Second most recent error code

Third most recent error code

Fourth most recent error code

Fifth most recent error code

Sixth most recent error code

Seventh most recent error code

Eighth most recent error code

Ninth most recent error code

10F

Tenth most recent error code

Exit - (Return to P4 menu)

OD - Operation Data

FH - Failure History

P7 - Gas Type

nA Natural Gas (NG)

LP Liquid Petroleum Gas (LPG)