Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 22-07-2020, 04:43   #1
Registered User
 
bgallinger's Avatar

Join Date: Feb 2010
Location: Miami, FL
Boat: Hunter 340
Posts: 429
Images: 10
Whale 6 Ga. water heater

I have a Whale water heater that has operated perfectly until now. It heats water from the circulating coolant from the engine (typical). It has always given me scalding hot water, but now, the water is just warm.
Any ideas anyone?
bgallinger is offline   Reply With Quote
Old 22-07-2020, 05:05   #2
Registered User

Join Date: Nov 2013
Location: Nice, France
Boat: Hunter Marine 38
Posts: 937
Re: Whale 6 Ga. water heater

Engine thermostat?
sailormed is online now   Reply With Quote
Old 22-07-2020, 05:44   #3
Registered User

Join Date: Aug 2015
Location: Savannah Ga USA
Boat: Brewer 12.3
Posts: 44
Re: Whale 6 Ga. water heater

Flush the thing. I recently took one out of my boat and was surprised at how much crud was in it. This will also extend its life.
And do check engine thermostat or look at engine temp and coolant levels.
Oldwheels is offline   Reply With Quote
Old 22-07-2020, 07:20   #4
Registered User
 
bgallinger's Avatar

Join Date: Feb 2010
Location: Miami, FL
Boat: Hunter 340
Posts: 429
Images: 10
Re: Whale 6 Ga. water heater

Thanks for the suggestions! I will replace the thermostat if I can find one.
bgallinger is offline   Reply With Quote
Old 22-07-2020, 07:29   #5
Registered User
 
Cheechako's Avatar

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 22,901
Re: Whale 6 Ga. water heater

Dont replace the thermostat unless you take an engine temp reading. Waste of time. Think about it.. a thermostat opens when the engine heats up. When the engine is hot it is fully open. Pretty hard for a Thermostat to fail and make the engine too cool. Too hot... yes. The engine could take longer to get fully hot, but eventually will.

Do easy stuff first:
Look for crud at any joints in the lines from the engine to the water heater. Maybe disconnect the hose from the engine to the heater and see how the flow is with engine running. Or if gunk comes out.
Also, some hoses fail with the liner coming apart. A piece can then block the hose. Especially at the hose connections to the heater. Something must be partially blocking water flow to the heater.
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is online now   Reply With Quote
Old 22-07-2020, 08:57   #6
Registered User

Join Date: Feb 2009
Posts: 2,210
Re: Whale 6 Ga. water heater

Quote:
Originally Posted by Cheechako View Post
Dont replace the thermostat unless you take an engine temp reading. Waste of time. Think about it.. a thermostat opens when the engine heats up. When the engine is hot it is fully open. Pretty hard for a Thermostat to fail and make the engine too cool. Too hot... yes. The engine could take longer to get fully hot, but eventually will.

Do easy stuff first:
Look for crud at any joints in the lines from the engine to the water heater. Maybe disconnect the hose from the engine to the heater and see how the flow is with engine running. Or if gunk comes out.
Also, some hoses fail with the liner coming apart. A piece can then block the hose. Especially at the hose connections to the heater. Something must be partially blocking water flow to the heater.
I disagree I have seen many thermostats fail in the open position. The one on my generator is stuck open right now. Very common
motion30 is offline   Reply With Quote
Old 22-07-2020, 09:09   #7
Registered User
 
Cheechako's Avatar

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 22,901
Re: Whale 6 Ga. water heater

Quote:
Originally Posted by motion30 View Post
I disagree I have seen many thermostats fail in the open position. The one on my generator is stuck open right now. Very common
I agree with you! What I'm saying is the engine will heat up to normal temp with it stuck open, but just take longer. It's just like it is after a half hour of running! Unless you are just slow idling at low rpm and no load.
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is online now   Reply With Quote
Old 22-07-2020, 09:31   #8
Registered User

Join Date: Aug 2016
Location: Long Island, NY
Boat: Cal 33-2
Posts: 223
Re: Whale 6 Ga. water heater

Did you change your anti-freeze recently? Air in the hose loop?
__________________
S/V First Tracks
1985 Cal 33-2
JimsCAL is offline   Reply With Quote
Old 22-07-2020, 10:50   #9
Registered User

Join Date: Dec 2018
Location: Wichita/Pensacola
Boat: Lagoon TPI 37'
Posts: 308
Re: Whale 6 Ga. water heater

My hose to the water heater had separated (inner core) and clogged the line. Take your hose off and see if you can blow through it. Now it is scalding hot again (160F).
sailingchiro is offline   Reply With Quote
Old 03-08-2020, 03:35   #10
Registered User
 
bgallinger's Avatar

Join Date: Feb 2010
Location: Miami, FL
Boat: Hunter 340
Posts: 429
Images: 10
Re: Whale 6 Ga. water heater

Thanks to all who responded! I changed out the thermostat first as I had a spare, then ran the engine at idle for an hour. I saw no change in water temp., so I pulled off the coolant hose ends to check flow through the hoses and water heater, then re-filled the hoses with anti-freeze. Ta Da!! Hot water+happy wife!
bgallinger is offline   Reply With Quote
Reply

Tags
heater, water

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Whale water heater high temp limit switch phorvati Plumbing Systems and Fixtures 1 27-05-2019 09:06
Open 60 sailboat hits whale in artemis transat. WHALE DAMAGE sailingaway Monohull Sailboats 20 09-10-2018 05:05
Hot Water Heater / Block Heater? - 3GM30 BareProductions Engines and Propulsion Systems 9 23-02-2013 19:12
Gas Water Heater or Combined Calorifier / Immersion Heater ? simonmd Plumbing Systems and Fixtures 5 30-12-2010 08:50
NZ trimaran hit's whale. WHALE WINS. cat man do Multihull Sailboats 17 19-01-2007 20:05

Advertise Here


All times are GMT -7. The time now is 14:34.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.